Home / 13,252.10-18,304.13-9,909.78

Finding the Fourth Proportional to 13,252.10, 18,304.13 and 9,909.78

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Solution

The fourth proportional to 13,252.10, 18,304.13 and 9,909.78 is: 13,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,252.10 : 18,304.13 = 9,909.78 : x
  2. Step 2: Convert to fraction form
    13,252.10/18,304.13 = 9,909.78/x
  3. Step 3: Cross multiply
    13,252.10x = 18,304.13 × 9,909.78
  4. Step 4: Simplify right side
    13,252.10x = 181,389,901.39
  5. Step 5: Solve for x
    x = 181,389,901.39/13,252.10
  6. Step 6: Final answer
    x = 13,687.63

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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.