Home / 42,681.44-64,022.16-11,519.12

Finding the Fourth Proportional to 42,681.44, 64,022.16 and 11,519.12

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Solution

The fourth proportional to 42,681.44, 64,022.16 and 11,519.12 is: 17,278.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,681.44 : 64,022.16 = 11,519.12 : x
  2. Step 2: Convert to fraction form
    42,681.44/64,022.16 = 11,519.12/x
  3. Step 3: Cross multiply
    42,681.44x = 64,022.16 × 11,519.12
  4. Step 4: Simplify right side
    42,681.44x = 737,478,943.70
  5. Step 5: Solve for x
    x = 737,478,943.70/42,681.44
  6. Step 6: Final answer
    x = 17,278.68

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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.