Home / 20,591.49-28,419.30-13,038.53

Finding the Fourth Proportional to 20,591.49, 28,419.30 and 13,038.53

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Solution

The fourth proportional to 20,591.49, 28,419.30 and 13,038.53 is: 17,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.49 : 28,419.30 = 13,038.53 : x
  2. Step 2: Convert to fraction form
    20,591.49/28,419.30 = 13,038.53/x
  3. Step 3: Cross multiply
    20,591.49x = 28,419.30 × 13,038.53
  4. Step 4: Simplify right side
    20,591.49x = 370,545,753.53
  5. Step 5: Solve for x
    x = 370,545,753.53/20,591.49
  6. Step 6: Final answer
    x = 17,995.09

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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.