Home / 9,638.40-14,479.20-9,244.80

Finding the Fourth Proportional to 9,638.40, 14,479.20 and 9,244.80

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Solution

The fourth proportional to 9,638.40, 14,479.20 and 9,244.80 is: 13,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,638.40 : 14,479.20 = 9,244.80 : x
  2. Step 2: Convert to fraction form
    9,638.40/14,479.20 = 9,244.80/x
  3. Step 3: Cross multiply
    9,638.40x = 14,479.20 × 9,244.80
  4. Step 4: Simplify right side
    9,638.40x = 133,857,308.16
  5. Step 5: Solve for x
    x = 133,857,308.16/9,638.40
  6. Step 6: Final answer
    x = 13,887.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.