Home / 13,663.28-18,855.02-7,613.61

Finding the Fourth Proportional to 13,663.28, 18,855.02 and 7,613.61

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Solution

The fourth proportional to 13,663.28, 18,855.02 and 7,613.61 is: 10,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.28 : 18,855.02 = 7,613.61 : x
  2. Step 2: Convert to fraction form
    13,663.28/18,855.02 = 7,613.61/x
  3. Step 3: Cross multiply
    13,663.28x = 18,855.02 × 7,613.61
  4. Step 4: Simplify right side
    13,663.28x = 143,554,690.13
  5. Step 5: Solve for x
    x = 143,554,690.13/13,663.28
  6. Step 6: Final answer
    x = 10,506.60

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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.