Home / 20,569,812.29-28,389,232.79-12,731,838.58

Finding the Fourth Proportional to 20,569,812.29, 28,389,232.79 and 12,731,838.58

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Solution

The fourth proportional to 20,569,812.29, 28,389,232.79 and 12,731,838.58 is: 17,571,727.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,812.29 : 28,389,232.79 = 12,731,838.58 : x
  2. Step 2: Convert to fraction form
    20,569,812.29/28,389,232.79 = 12,731,838.58/x
  3. Step 3: Cross multiply
    20,569,812.29x = 28,389,232.79 × 12,731,838.58
  4. Step 4: Simplify right side
    20,569,812.29x = 361,447,129,292,323
  5. Step 5: Solve for x
    x = 361,447,129,292,323/20,569,812.29
  6. Step 6: Final answer
    x = 17,571,727.16

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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.