Home / 28,569.76-42,882.35-13,789.08

Finding the Fourth Proportional to 28,569.76, 42,882.35 and 13,789.08

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Solution

The fourth proportional to 28,569.76, 42,882.35 and 13,789.08 is: 20,696.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.76 : 42,882.35 = 13,789.08 : x
  2. Step 2: Convert to fraction form
    28,569.76/42,882.35 = 13,789.08/x
  3. Step 3: Cross multiply
    28,569.76x = 42,882.35 × 13,789.08
  4. Step 4: Simplify right side
    28,569.76x = 591,308,154.74
  5. Step 5: Solve for x
    x = 591,308,154.74/28,569.76
  6. Step 6: Final answer
    x = 20,696.99

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1.5x scale

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.