Home / 13,543.85-18,691.50-7,577.44

Finding the Fourth Proportional to 13,543.85, 18,691.50 and 7,577.44

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Solution

The fourth proportional to 13,543.85, 18,691.50 and 7,577.44 is: 10,457.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.85 : 18,691.50 = 7,577.44 : x
  2. Step 2: Convert to fraction form
    13,543.85/18,691.50 = 7,577.44/x
  3. Step 3: Cross multiply
    13,543.85x = 18,691.50 × 7,577.44
  4. Step 4: Simplify right side
    13,543.85x = 141,633,719.76
  5. Step 5: Solve for x
    x = 141,633,719.76/13,543.85
  6. Step 6: Final answer
    x = 10,457.42

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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.