Home / 38,656,981.76-53,343,888-21,252,876.80

Finding the Fourth Proportional to 38,656,981.76, 53,343,888 and 21,252,876.80

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Solution

The fourth proportional to 38,656,981.76, 53,343,888 and 21,252,876.80 is: 29,327,459.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,656,981.76 : 53,343,888 = 21,252,876.80 : x
  2. Step 2: Convert to fraction form
    38,656,981.76/53,343,888 = 21,252,876.80/x
  3. Step 3: Cross multiply
    38,656,981.76x = 53,343,888 × 21,252,876.80
  4. Step 4: Simplify right side
    38,656,981.76x = 1,133,711,079,696,998.50
  5. Step 5: Solve for x
    x = 1,133,711,079,696,998.50/38,656,981.76
  6. Step 6: Final answer
    x = 29,327,459.83

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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.