Home / 20,742.66-28,627.08-12,681.04

Finding the Fourth Proportional to 20,742.66, 28,627.08 and 12,681.04

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Solution

The fourth proportional to 20,742.66, 28,627.08 and 12,681.04 is: 17,501.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.66 : 28,627.08 = 12,681.04 : x
  2. Step 2: Convert to fraction form
    20,742.66/28,627.08 = 12,681.04/x
  3. Step 3: Cross multiply
    20,742.66x = 28,627.08 × 12,681.04
  4. Step 4: Simplify right side
    20,742.66x = 363,021,146.56
  5. Step 5: Solve for x
    x = 363,021,146.56/20,742.66
  6. Step 6: Final answer
    x = 17,501.19

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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.