Home / 15,753,287.79-21,739,455.93-9,139,213.77

Finding the Fourth Proportional to 15,753,287.79, 21,739,455.93 and 9,139,213.77

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Solution

The fourth proportional to 15,753,287.79, 21,739,455.93 and 9,139,213.77 is: 12,612,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,753,287.79 : 21,739,455.93 = 9,139,213.77 : x
  2. Step 2: Convert to fraction form
    15,753,287.79/21,739,455.93 = 9,139,213.77/x
  3. Step 3: Cross multiply
    15,753,287.79x = 21,739,455.93 × 9,139,213.77
  4. Step 4: Simplify right side
    15,753,287.79x = 198,681,534,987,764.16
  5. Step 5: Solve for x
    x = 198,681,534,987,764.16/15,753,287.79
  6. Step 6: Final answer
    x = 12,612,067.88

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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.