Home / 28,517.40-42,784.29-14,476.86

Finding the Fourth Proportional to 28,517.40, 42,784.29 and 14,476.86

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Solution

The fourth proportional to 28,517.40, 42,784.29 and 14,476.86 is: 21,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.40 : 42,784.29 = 14,476.86 : x
  2. Step 2: Convert to fraction form
    28,517.40/42,784.29 = 14,476.86/x
  3. Step 3: Cross multiply
    28,517.40x = 42,784.29 × 14,476.86
  4. Step 4: Simplify right side
    28,517.40x = 619,382,176.53
  5. Step 5: Solve for x
    x = 619,382,176.53/28,517.40
  6. Step 6: Final answer
    x = 21,719.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.