Home / 42,655.56-63,987.18-11,490.12

Finding the Fourth Proportional to 42,655.56, 63,987.18 and 11,490.12

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Solution

The fourth proportional to 42,655.56, 63,987.18 and 11,490.12 is: 17,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,655.56 : 63,987.18 = 11,490.12 : x
  2. Step 2: Convert to fraction form
    42,655.56/63,987.18 = 11,490.12/x
  3. Step 3: Cross multiply
    42,655.56x = 63,987.18 × 11,490.12
  4. Step 4: Simplify right side
    42,655.56x = 735,220,376.66
  5. Step 5: Solve for x
    x = 735,220,376.66/42,655.56
  6. Step 6: Final answer
    x = 17,236.21

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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.