Home / 20,591.38-28,419.15-13,038.41

Finding the Fourth Proportional to 20,591.38, 28,419.15 and 13,038.41

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Solution

The fourth proportional to 20,591.38, 28,419.15 and 13,038.41 is: 17,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.38 : 28,419.15 = 13,038.41 : x
  2. Step 2: Convert to fraction form
    20,591.38/28,419.15 = 13,038.41/x
  3. Step 3: Cross multiply
    20,591.38x = 28,419.15 × 13,038.41
  4. Step 4: Simplify right side
    20,591.38x = 370,540,322.26
  5. Step 5: Solve for x
    x = 370,540,322.26/20,591.38
  6. Step 6: Final answer
    x = 17,994.93

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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.