Home / 20,773,172.72-28,668,068.12-12,515,826.17

Finding the Fourth Proportional to 20,773,172.72, 28,668,068.12 and 12,515,826.17

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Solution

The fourth proportional to 20,773,172.72, 28,668,068.12 and 12,515,826.17 is: 17,272,496.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773,172.72 : 28,668,068.12 = 12,515,826.17 : x
  2. Step 2: Convert to fraction form
    20,773,172.72/28,668,068.12 = 12,515,826.17/x
  3. Step 3: Cross multiply
    20,773,172.72x = 28,668,068.12 × 12,515,826.17
  4. Step 4: Simplify right side
    20,773,172.72x = 358,804,557,252,209.38
  5. Step 5: Solve for x
    x = 358,804,557,252,209.38/20,773,172.72
  6. Step 6: Final answer
    x = 17,272,496.70

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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.