Home / 42,691.36-64,029.20-11,519.28

Finding the Fourth Proportional to 42,691.36, 64,029.20 and 11,519.28

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Solution

The fourth proportional to 42,691.36, 64,029.20 and 11,519.28 is: 17,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,691.36 : 64,029.20 = 11,519.28 : x
  2. Step 2: Convert to fraction form
    42,691.36/64,029.20 = 11,519.28/x
  3. Step 3: Cross multiply
    42,691.36x = 64,029.20 × 11,519.28
  4. Step 4: Simplify right side
    42,691.36x = 737,570,282.98
  5. Step 5: Solve for x
    x = 737,570,282.98/42,691.36
  6. Step 6: Final answer
    x = 17,276.80

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1.5x scale

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.