Home / 42,319.88-63,434.18-18,606.36

Finding the Fourth Proportional to 42,319.88, 63,434.18 and 18,606.36

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Solution

The fourth proportional to 42,319.88, 63,434.18 and 18,606.36 is: 27,889.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,319.88 : 63,434.18 = 18,606.36 : x
  2. Step 2: Convert to fraction form
    42,319.88/63,434.18 = 18,606.36/x
  3. Step 3: Cross multiply
    42,319.88x = 63,434.18 × 18,606.36
  4. Step 4: Simplify right side
    42,319.88x = 1,180,279,189.38
  5. Step 5: Solve for x
    x = 1,180,279,189.38/42,319.88
  6. Step 6: Final answer
    x = 27,889.47

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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.