Home / 13,437.18-18,543.40-7,387.52

Finding the Fourth Proportional to 13,437.18, 18,543.40 and 7,387.52

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Solution

The fourth proportional to 13,437.18, 18,543.40 and 7,387.52 is: 10,194.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.18 : 18,543.40 = 7,387.52 : x
  2. Step 2: Convert to fraction form
    13,437.18/18,543.40 = 7,387.52/x
  3. Step 3: Cross multiply
    13,437.18x = 18,543.40 × 7,387.52
  4. Step 4: Simplify right side
    13,437.18x = 136,989,695.02
  5. Step 5: Solve for x
    x = 136,989,695.02/13,437.18
  6. Step 6: Final answer
    x = 10,194.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.