Home / 9,515.40-14,274.39-8,990.76

Finding the Fourth Proportional to 9,515.40, 14,274.39 and 8,990.76

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Solution

The fourth proportional to 9,515.40, 14,274.39 and 8,990.76 is: 13,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,515.40 : 14,274.39 = 8,990.76 : x
  2. Step 2: Convert to fraction form
    9,515.40/14,274.39 = 8,990.76/x
  3. Step 3: Cross multiply
    9,515.40x = 14,274.39 × 8,990.76
  4. Step 4: Simplify right side
    9,515.40x = 128,337,614.64
  5. Step 5: Solve for x
    x = 128,337,614.64/9,515.40
  6. Step 6: Final answer
    x = 13,487.36

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Double scale
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Similar ratio
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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.