Home / 18,836.71-28,255.29-5,689.21

Finding the Fourth Proportional to 18,836.71, 28,255.29 and 5,689.21

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Solution

The fourth proportional to 18,836.71, 28,255.29 and 5,689.21 is: 8,533.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.71 : 28,255.29 = 5,689.21 : x
  2. Step 2: Convert to fraction form
    18,836.71/28,255.29 = 5,689.21/x
  3. Step 3: Cross multiply
    18,836.71x = 28,255.29 × 5,689.21
  4. Step 4: Simplify right side
    18,836.71x = 160,750,278.42
  5. Step 5: Solve for x
    x = 160,750,278.42/18,836.71
  6. Step 6: Final answer
    x = 8,533.88

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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.