Home / 28,172,039.20-42,267,128.64-12,824,820.16

Finding the Fourth Proportional to 28,172,039.20, 42,267,128.64 and 12,824,820.16

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Solution

The fourth proportional to 28,172,039.20, 42,267,128.64 and 12,824,820.16 is: 19,241,359.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172,039.20 : 42,267,128.64 = 12,824,820.16 : x
  2. Step 2: Convert to fraction form
    28,172,039.20/42,267,128.64 = 12,824,820.16/x
  3. Step 3: Cross multiply
    28,172,039.20x = 42,267,128.64 × 12,824,820.16
  4. Step 4: Simplify right side
    28,172,039.20x = 542,068,323,487,585.38
  5. Step 5: Solve for x
    x = 542,068,323,487,585.38/28,172,039.20
  6. Step 6: Final answer
    x = 19,241,359.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.