Home / 13,543.74-20,298.28-11,781.38

Finding the Fourth Proportional to 13,543.74, 20,298.28 and 11,781.38

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Solution

The fourth proportional to 13,543.74, 20,298.28 and 11,781.38 is: 17,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.74 : 20,298.28 = 11,781.38 : x
  2. Step 2: Convert to fraction form
    13,543.74/20,298.28 = 11,781.38/x
  3. Step 3: Cross multiply
    13,543.74x = 20,298.28 × 11,781.38
  4. Step 4: Simplify right side
    13,543.74x = 239,141,750.03
  5. Step 5: Solve for x
    x = 239,141,750.03/13,543.74
  6. Step 6: Final answer
    x = 17,657.00

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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.