Home / 20,302.27-28,017.75-11,350.15

Finding the Fourth Proportional to 20,302.27, 28,017.75 and 11,350.15

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Solution

The fourth proportional to 20,302.27, 28,017.75 and 11,350.15 is: 15,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.27 : 28,017.75 = 11,350.15 : x
  2. Step 2: Convert to fraction form
    20,302.27/28,017.75 = 11,350.15/x
  3. Step 3: Cross multiply
    20,302.27x = 28,017.75 × 11,350.15
  4. Step 4: Simplify right side
    20,302.27x = 318,005,665.16
  5. Step 5: Solve for x
    x = 318,005,665.16/20,302.27
  6. Step 6: Final answer
    x = 15,663.55

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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.