Home / 20,887.12-28,833.28-12,502

Finding the Fourth Proportional to 20,887.12, 28,833.28 and 12,502

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Solution

The fourth proportional to 20,887.12, 28,833.28 and 12,502 is: 17,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.12 : 28,833.28 = 12,502 : x
  2. Step 2: Convert to fraction form
    20,887.12/28,833.28 = 12,502/x
  3. Step 3: Cross multiply
    20,887.12x = 28,833.28 × 12,502
  4. Step 4: Simplify right side
    20,887.12x = 360,473,666.56
  5. Step 5: Solve for x
    x = 360,473,666.56/20,887.12
  6. Step 6: Final answer
    x = 17,258.18

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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.