Home / 14,515.29-20,030.22-8,142.75

Finding the Fourth Proportional to 14,515.29, 20,030.22 and 8,142.75

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Solution

The fourth proportional to 14,515.29, 20,030.22 and 8,142.75 is: 11,236.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.29 : 20,030.22 = 8,142.75 : x
  2. Step 2: Convert to fraction form
    14,515.29/20,030.22 = 8,142.75/x
  3. Step 3: Cross multiply
    14,515.29x = 20,030.22 × 8,142.75
  4. Step 4: Simplify right side
    14,515.29x = 163,101,073.91
  5. Step 5: Solve for x
    x = 163,101,073.91/14,515.29
  6. Step 6: Final answer
    x = 11,236.50

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Half scale
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Double scale
Find fourth proportional to 14,516.29, 20,031.60 and 8,143.75
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.