Home / 20,398.16-28,147.77-11,322.52

Finding the Fourth Proportional to 20,398.16, 28,147.77 and 11,322.52

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Solution

The fourth proportional to 20,398.16, 28,147.77 and 11,322.52 is: 15,624.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.16 : 28,147.77 = 11,322.52 : x
  2. Step 2: Convert to fraction form
    20,398.16/28,147.77 = 11,322.52/x
  3. Step 3: Cross multiply
    20,398.16x = 28,147.77 × 11,322.52
  4. Step 4: Simplify right side
    20,398.16x = 318,703,618.41
  5. Step 5: Solve for x
    x = 318,703,618.41/20,398.16
  6. Step 6: Final answer
    x = 15,624.13

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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.