Home / 13,519.38-18,656.53-7,551.13

Finding the Fourth Proportional to 13,519.38, 18,656.53 and 7,551.13

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Solution

The fourth proportional to 13,519.38, 18,656.53 and 7,551.13 is: 10,420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.38 : 18,656.53 = 7,551.13 : x
  2. Step 2: Convert to fraction form
    13,519.38/18,656.53 = 7,551.13/x
  3. Step 3: Cross multiply
    13,519.38x = 18,656.53 × 7,551.13
  4. Step 4: Simplify right side
    13,519.38x = 140,877,883.38
  5. Step 5: Solve for x
    x = 140,877,883.38/13,519.38
  6. Step 6: Final answer
    x = 10,420.44

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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.