Home / 13,434.02-18,538.55-7,691.28

Finding the Fourth Proportional to 13,434.02, 18,538.55 and 7,691.28

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Solution

The fourth proportional to 13,434.02, 18,538.55 and 7,691.28 is: 10,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.02 : 18,538.55 = 7,691.28 : x
  2. Step 2: Convert to fraction form
    13,434.02/18,538.55 = 7,691.28/x
  3. Step 3: Cross multiply
    13,434.02x = 18,538.55 × 7,691.28
  4. Step 4: Simplify right side
    13,434.02x = 142,585,198.07
  5. Step 5: Solve for x
    x = 142,585,198.07/13,434.02
  6. Step 6: Final answer
    x = 10,613.74

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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.