Home / 42,143.38-63,215.04-12,560.46

Finding the Fourth Proportional to 42,143.38, 63,215.04 and 12,560.46

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Solution

The fourth proportional to 42,143.38, 63,215.04 and 12,560.46 is: 18,840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,143.38 : 63,215.04 = 12,560.46 : x
  2. Step 2: Convert to fraction form
    42,143.38/63,215.04 = 12,560.46/x
  3. Step 3: Cross multiply
    42,143.38x = 63,215.04 × 12,560.46
  4. Step 4: Simplify right side
    42,143.38x = 794,009,981.32
  5. Step 5: Solve for x
    x = 794,009,981.32/42,143.38
  6. Step 6: Final answer
    x = 18,840.68

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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.