Home / 28,890.54-39,867.12-16,142.76

Finding the Fourth Proportional to 28,890.54, 39,867.12 and 16,142.76

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Solution

The fourth proportional to 28,890.54, 39,867.12 and 16,142.76 is: 22,275.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.54 : 39,867.12 = 16,142.76 : x
  2. Step 2: Convert to fraction form
    28,890.54/39,867.12 = 16,142.76/x
  3. Step 3: Cross multiply
    28,890.54x = 39,867.12 × 16,142.76
  4. Step 4: Simplify right side
    28,890.54x = 643,565,350.05
  5. Step 5: Solve for x
    x = 643,565,350.05/28,890.54
  6. Step 6: Final answer
    x = 22,275.99

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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.