Home / 28,276,142.55-39,021,593.52-15,718,376.25

Finding the Fourth Proportional to 28,276,142.55, 39,021,593.52 and 15,718,376.25

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Solution

The fourth proportional to 28,276,142.55, 39,021,593.52 and 15,718,376.25 is: 21,691,646.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276,142.55 : 39,021,593.52 = 15,718,376.25 : x
  2. Step 2: Convert to fraction form
    28,276,142.55/39,021,593.52 = 15,718,376.25/x
  3. Step 3: Cross multiply
    28,276,142.55x = 39,021,593.52 × 15,718,376.25
  4. Step 4: Simplify right side
    28,276,142.55x = 613,356,088,902,178.62
  5. Step 5: Solve for x
    x = 613,356,088,902,178.62/28,276,142.55
  6. Step 6: Final answer
    x = 21,691,646.51

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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.