Home / 28,426.59-39,229.01-15,680.34

Finding the Fourth Proportional to 28,426.59, 39,229.01 and 15,680.34

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Solution

The fourth proportional to 28,426.59, 39,229.01 and 15,680.34 is: 21,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.59 : 39,229.01 = 15,680.34 : x
  2. Step 2: Convert to fraction form
    28,426.59/39,229.01 = 15,680.34/x
  3. Step 3: Cross multiply
    28,426.59x = 39,229.01 × 15,680.34
  4. Step 4: Simplify right side
    28,426.59x = 615,124,214.66
  5. Step 5: Solve for x
    x = 615,124,214.66/28,426.59
  6. Step 6: Final answer
    x = 21,639.04

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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.