Home / 20,949,167.16-28,909,572.30-11,781,809.64

Finding the Fourth Proportional to 20,949,167.16, 28,909,572.30 and 11,781,809.64

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Solution

The fourth proportional to 20,949,167.16, 28,909,572.30 and 11,781,809.64 is: 16,258,740.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949,167.16 : 28,909,572.30 = 11,781,809.64 : x
  2. Step 2: Convert to fraction form
    20,949,167.16/28,909,572.30 = 11,781,809.64/x
  3. Step 3: Cross multiply
    20,949,167.16x = 28,909,572.30 × 11,781,809.64
  4. Step 4: Simplify right side
    20,949,167.16x = 340,607,077,612,417
  5. Step 5: Solve for x
    x = 340,607,077,612,417/20,949,167.16
  6. Step 6: Final answer
    x = 16,258,740.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.