Home / 42,491.17-63,736.89-11,326.42

Finding the Fourth Proportional to 42,491.17, 63,736.89 and 11,326.42

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Solution

The fourth proportional to 42,491.17, 63,736.89 and 11,326.42 is: 16,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,491.17 : 63,736.89 = 11,326.42 : x
  2. Step 2: Convert to fraction form
    42,491.17/63,736.89 = 11,326.42/x
  3. Step 3: Cross multiply
    42,491.17x = 63,736.89 × 11,326.42
  4. Step 4: Simplify right side
    42,491.17x = 721,910,785.63
  5. Step 5: Solve for x
    x = 721,910,785.63/42,491.17
  6. Step 6: Final answer
    x = 16,989.67

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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.