Home / 12,985,934.38-17,921,116.94-7,184,621.62

Finding the Fourth Proportional to 12,985,934.38, 17,921,116.94 and 7,184,621.62

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Solution

The fourth proportional to 12,985,934.38, 17,921,116.94 and 7,184,621.62 is: 9,915,069.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,934.38 : 17,921,116.94 = 7,184,621.62 : x
  2. Step 2: Convert to fraction form
    12,985,934.38/17,921,116.94 = 7,184,621.62/x
  3. Step 3: Cross multiply
    12,985,934.38x = 17,921,116.94 × 7,184,621.62
  4. Step 4: Simplify right side
    12,985,934.38x = 128,756,444,221,672.25
  5. Step 5: Solve for x
    x = 128,756,444,221,672.25/12,985,934.38
  6. Step 6: Final answer
    x = 9,915,069.68

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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.