Home / 12,985,930.38-17,921,111.42-7,184,617.62

Finding the Fourth Proportional to 12,985,930.38, 17,921,111.42 and 7,184,617.62

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Solution

The fourth proportional to 12,985,930.38, 17,921,111.42 and 7,184,617.62 is: 9,915,064.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,930.38 : 17,921,111.42 = 7,184,617.62 : x
  2. Step 2: Convert to fraction form
    12,985,930.38/17,921,111.42 = 7,184,617.62/x
  3. Step 3: Cross multiply
    12,985,930.38x = 17,921,111.42 × 7,184,617.62
  4. Step 4: Simplify right side
    12,985,930.38x = 128,756,332,878,115.23
  5. Step 5: Solve for x
    x = 128,756,332,878,115.23/12,985,930.38
  6. Step 6: Final answer
    x = 9,915,064.16

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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.