Home / 42,555.55-63,805.92-20,368.39

Finding the Fourth Proportional to 42,555.55, 63,805.92 and 20,368.39

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Solution

The fourth proportional to 42,555.55, 63,805.92 and 20,368.39 is: 30,539.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,555.55 : 63,805.92 = 20,368.39 : x
  2. Step 2: Convert to fraction form
    42,555.55/63,805.92 = 20,368.39/x
  3. Step 3: Cross multiply
    42,555.55x = 63,805.92 × 20,368.39
  4. Step 4: Simplify right side
    42,555.55x = 1,299,623,862.87
  5. Step 5: Solve for x
    x = 1,299,623,862.87/42,555.55
  6. Step 6: Final answer
    x = 30,539.47

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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.