Home / 28,438.13-39,246.83-15,693.83

Finding the Fourth Proportional to 28,438.13, 39,246.83 and 15,693.83

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Solution

The fourth proportional to 28,438.13, 39,246.83 and 15,693.83 is: 21,658.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.13 : 39,246.83 = 15,693.83 : x
  2. Step 2: Convert to fraction form
    28,438.13/39,246.83 = 15,693.83/x
  3. Step 3: Cross multiply
    28,438.13x = 39,246.83 × 15,693.83
  4. Step 4: Simplify right side
    28,438.13x = 615,933,078.06
  5. Step 5: Solve for x
    x = 615,933,078.06/28,438.13
  6. Step 6: Final answer
    x = 21,658.71

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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.