Home / 18,468,009.40-27,702,014.10-12,421,391.80

Finding the Fourth Proportional to 18,468,009.40, 27,702,014.10 and 12,421,391.80

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Solution

The fourth proportional to 18,468,009.40, 27,702,014.10 and 12,421,391.80 is: 18,632,087.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468,009.40 : 27,702,014.10 = 12,421,391.80 : x
  2. Step 2: Convert to fraction form
    18,468,009.40/27,702,014.10 = 12,421,391.80/x
  3. Step 3: Cross multiply
    18,468,009.40x = 27,702,014.10 × 12,421,391.80
  4. Step 4: Simplify right side
    18,468,009.40x = 344,097,570,785,224.44
  5. Step 5: Solve for x
    x = 344,097,570,785,224.44/18,468,009.40
  6. Step 6: Final answer
    x = 18,632,087.70

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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.