Home / 20,772,081.60-28,669,433.13-13,695,248.76

Finding the Fourth Proportional to 20,772,081.60, 28,669,433.13 and 13,695,248.76

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Solution

The fourth proportional to 20,772,081.60, 28,669,433.13 and 13,695,248.76 is: 18,902,054.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772,081.60 : 28,669,433.13 = 13,695,248.76 : x
  2. Step 2: Convert to fraction form
    20,772,081.60/28,669,433.13 = 13,695,248.76/x
  3. Step 3: Cross multiply
    20,772,081.60x = 28,669,433.13 × 13,695,248.76
  4. Step 4: Simplify right side
    20,772,081.60x = 392,635,018,523,535.38
  5. Step 5: Solve for x
    x = 392,635,018,523,535.38/20,772,081.60
  6. Step 6: Final answer
    x = 18,902,054.50

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1.5x scale

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.