Home / 14,985.28-20,679.24-8,612.92

Finding the Fourth Proportional to 14,985.28, 20,679.24 and 8,612.92

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Solution

The fourth proportional to 14,985.28, 20,679.24 and 8,612.92 is: 11,885.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,985.28 : 20,679.24 = 8,612.92 : x
  2. Step 2: Convert to fraction form
    14,985.28/20,679.24 = 8,612.92/x
  3. Step 3: Cross multiply
    14,985.28x = 20,679.24 × 8,612.92
  4. Step 4: Simplify right side
    14,985.28x = 178,108,639.78
  5. Step 5: Solve for x
    x = 178,108,639.78/14,985.28
  6. Step 6: Final answer
    x = 11,885.57

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Double scale
Find fourth proportional to 14,986.28, 20,680.62 and 8,613.92
Similar ratio
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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.