Home / 42,141.12-63,211.66-12,558.20

Finding the Fourth Proportional to 42,141.12, 63,211.66 and 12,558.20

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Solution

The fourth proportional to 42,141.12, 63,211.66 and 12,558.20 is: 18,837.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,141.12 : 63,211.66 = 12,558.20 : x
  2. Step 2: Convert to fraction form
    42,141.12/63,211.66 = 12,558.20/x
  3. Step 3: Cross multiply
    42,141.12x = 63,211.66 × 12,558.20
  4. Step 4: Simplify right side
    42,141.12x = 793,824,668.61
  5. Step 5: Solve for x
    x = 793,824,668.61/42,141.12
  6. Step 6: Final answer
    x = 18,837.29

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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.