Home / 20,548.46-28,359.57-15,258.38

Finding the Fourth Proportional to 20,548.46, 28,359.57 and 15,258.38

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Solution

The fourth proportional to 20,548.46, 28,359.57 and 15,258.38 is: 21,058.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.46 : 28,359.57 = 15,258.38 : x
  2. Step 2: Convert to fraction form
    20,548.46/28,359.57 = 15,258.38/x
  3. Step 3: Cross multiply
    20,548.46x = 28,359.57 × 15,258.38
  4. Step 4: Simplify right side
    20,548.46x = 432,721,095.70
  5. Step 5: Solve for x
    x = 432,721,095.70/20,548.46
  6. Step 6: Final answer
    x = 21,058.57

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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.