Home / 10,304.19-14,229.40-8,287.90

Finding the Fourth Proportional to 10,304.19, 14,229.40 and 8,287.90

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Solution

The fourth proportional to 10,304.19, 14,229.40 and 8,287.90 is: 11,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,304.19 : 14,229.40 = 8,287.90 : x
  2. Step 2: Convert to fraction form
    10,304.19/14,229.40 = 8,287.90/x
  3. Step 3: Cross multiply
    10,304.19x = 14,229.40 × 8,287.90
  4. Step 4: Simplify right side
    10,304.19x = 117,931,844.26
  5. Step 5: Solve for x
    x = 117,931,844.26/10,304.19
  6. Step 6: Final answer
    x = 11,445.04

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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.