Home / 42,013.17-63,020.28-12,431.64

Finding the Fourth Proportional to 42,013.17, 63,020.28 and 12,431.64

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Solution

The fourth proportional to 42,013.17, 63,020.28 and 12,431.64 is: 18,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,013.17 : 63,020.28 = 12,431.64 : x
  2. Step 2: Convert to fraction form
    42,013.17/63,020.28 = 12,431.64/x
  3. Step 3: Cross multiply
    42,013.17x = 63,020.28 × 12,431.64
  4. Step 4: Simplify right side
    42,013.17x = 783,445,433.66
  5. Step 5: Solve for x
    x = 783,445,433.66/42,013.17
  6. Step 6: Final answer
    x = 18,647.62

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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.