Home / 14,513.28-20,028.10-8,139.87

Finding the Fourth Proportional to 14,513.28, 20,028.10 and 8,139.87

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Solution

The fourth proportional to 14,513.28, 20,028.10 and 8,139.87 is: 11,232.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,513.28 : 20,028.10 = 8,139.87 : x
  2. Step 2: Convert to fraction form
    14,513.28/20,028.10 = 8,139.87/x
  3. Step 3: Cross multiply
    14,513.28x = 20,028.10 × 8,139.87
  4. Step 4: Simplify right side
    14,513.28x = 163,026,130.35
  5. Step 5: Solve for x
    x = 163,026,130.35/14,513.28
  6. Step 6: Final answer
    x = 11,232.89

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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.