Home / 8,518,129.40-12,777,194.10-7,902,270.20

Finding the Fourth Proportional to 8,518,129.40, 12,777,194.10 and 7,902,270.20

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Solution

The fourth proportional to 8,518,129.40, 12,777,194.10 and 7,902,270.20 is: 11,853,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518,129.40 : 12,777,194.10 = 7,902,270.20 : x
  2. Step 2: Convert to fraction form
    8,518,129.40/12,777,194.10 = 7,902,270.20/x
  3. Step 3: Cross multiply
    8,518,129.40x = 12,777,194.10 × 7,902,270.20
  4. Step 4: Simplify right side
    8,518,129.40x = 100,968,840,176,045.81
  5. Step 5: Solve for x
    x = 100,968,840,176,045.81/8,518,129.40
  6. Step 6: Final answer
    x = 11,853,405.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.