Home / 21,434.28-32,137.72-8,962.90

Finding the Fourth Proportional to 21,434.28, 32,137.72 and 8,962.90

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Solution

The fourth proportional to 21,434.28, 32,137.72 and 8,962.90 is: 13,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.28 : 32,137.72 = 8,962.90 : x
  2. Step 2: Convert to fraction form
    21,434.28/32,137.72 = 8,962.90/x
  3. Step 3: Cross multiply
    21,434.28x = 32,137.72 × 8,962.90
  4. Step 4: Simplify right side
    21,434.28x = 288,047,170.59
  5. Step 5: Solve for x
    x = 288,047,170.59/21,434.28
  6. Step 6: Final answer
    x = 13,438.62

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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.