Home / 20,393.24-28,144.13-11,319.08

Finding the Fourth Proportional to 20,393.24, 28,144.13 and 11,319.08

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Solution

The fourth proportional to 20,393.24, 28,144.13 and 11,319.08 is: 15,621.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.24 : 28,144.13 = 11,319.08 : x
  2. Step 2: Convert to fraction form
    20,393.24/28,144.13 = 11,319.08/x
  3. Step 3: Cross multiply
    20,393.24x = 28,144.13 × 11,319.08
  4. Step 4: Simplify right side
    20,393.24x = 318,565,461.68
  5. Step 5: Solve for x
    x = 318,565,461.68/20,393.24
  6. Step 6: Final answer
    x = 15,621.13

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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.