Home / 13,781.40-20,675.28-5,884.20

Finding the Fourth Proportional to 13,781.40, 20,675.28 and 5,884.20

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Solution

The fourth proportional to 13,781.40, 20,675.28 and 5,884.20 is: 8,827.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.40 : 20,675.28 = 5,884.20 : x
  2. Step 2: Convert to fraction form
    13,781.40/20,675.28 = 5,884.20/x
  3. Step 3: Cross multiply
    13,781.40x = 20,675.28 × 5,884.20
  4. Step 4: Simplify right side
    13,781.40x = 121,657,482.58
  5. Step 5: Solve for x
    x = 121,657,482.58/13,781.40
  6. Step 6: Final answer
    x = 8,827.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.