Home / 42,697.11-63,959.85-21,285.21

Finding the Fourth Proportional to 42,697.11, 63,959.85 and 21,285.21

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Solution

The fourth proportional to 42,697.11, 63,959.85 and 21,285.21 is: 31,885.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,697.11 : 63,959.85 = 21,285.21 : x
  2. Step 2: Convert to fraction form
    42,697.11/63,959.85 = 21,285.21/x
  3. Step 3: Cross multiply
    42,697.11x = 63,959.85 × 21,285.21
  4. Step 4: Simplify right side
    42,697.11x = 1,361,398,838.82
  5. Step 5: Solve for x
    x = 1,361,398,838.82/42,697.11
  6. Step 6: Final answer
    x = 31,885.03

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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.