Home / 12,127,921.30-18,191,881.95-8,708,984.20

Finding the Fourth Proportional to 12,127,921.30, 18,191,881.95 and 8,708,984.20

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Solution

The fourth proportional to 12,127,921.30, 18,191,881.95 and 8,708,984.20 is: 13,063,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,921.30 : 18,191,881.95 = 8,708,984.20 : x
  2. Step 2: Convert to fraction form
    12,127,921.30/18,191,881.95 = 8,708,984.20/x
  3. Step 3: Cross multiply
    12,127,921.30x = 18,191,881.95 × 8,708,984.20
  4. Step 4: Simplify right side
    12,127,921.30x = 158,432,812,470,815.16
  5. Step 5: Solve for x
    x = 158,432,812,470,815.16/12,127,921.30
  6. Step 6: Final answer
    x = 13,063,476.30

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Double scale
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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.