Home / 42,699.49-63,995.77-20,508.73

Finding the Fourth Proportional to 42,699.49, 63,995.77 and 20,508.73

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Solution

The fourth proportional to 42,699.49, 63,995.77 and 20,508.73 is: 30,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,699.49 : 63,995.77 = 20,508.73 : x
  2. Step 2: Convert to fraction form
    42,699.49/63,995.77 = 20,508.73/x
  3. Step 3: Cross multiply
    42,699.49x = 63,995.77 × 20,508.73
  4. Step 4: Simplify right side
    42,699.49x = 1,312,471,968.07
  5. Step 5: Solve for x
    x = 1,312,471,968.07/42,699.49
  6. Step 6: Final answer
    x = 30,737.42

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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.