Home / 20,793.13-28,697.76-13,242.71

Finding the Fourth Proportional to 20,793.13, 28,697.76 and 13,242.71

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Solution

The fourth proportional to 20,793.13, 28,697.76 and 13,242.71 is: 18,277.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.13 : 28,697.76 = 13,242.71 : x
  2. Step 2: Convert to fraction form
    20,793.13/28,697.76 = 13,242.71/x
  3. Step 3: Cross multiply
    20,793.13x = 28,697.76 × 13,242.71
  4. Step 4: Simplify right side
    20,793.13x = 380,036,113.33
  5. Step 5: Solve for x
    x = 380,036,113.33/20,793.13
  6. Step 6: Final answer
    x = 18,277.00

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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.