Home / 28,440.59-39,247.38-15,693.28

Finding the Fourth Proportional to 28,440.59, 39,247.38 and 15,693.28

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Solution

The fourth proportional to 28,440.59, 39,247.38 and 15,693.28 is: 21,656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.59 : 39,247.38 = 15,693.28 : x
  2. Step 2: Convert to fraction form
    28,440.59/39,247.38 = 15,693.28/x
  3. Step 3: Cross multiply
    28,440.59x = 39,247.38 × 15,693.28
  4. Step 4: Simplify right side
    28,440.59x = 615,920,025.49
  5. Step 5: Solve for x
    x = 615,920,025.49/28,440.59
  6. Step 6: Final answer
    x = 21,656.38

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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.