Home / 20,959.85-31,460.46-15,397.58

Finding the Fourth Proportional to 20,959.85, 31,460.46 and 15,397.58

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Solution

The fourth proportional to 20,959.85, 31,460.46 and 15,397.58 is: 23,111.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.85 : 31,460.46 = 15,397.58 : x
  2. Step 2: Convert to fraction form
    20,959.85/31,460.46 = 15,397.58/x
  3. Step 3: Cross multiply
    20,959.85x = 31,460.46 × 15,397.58
  4. Step 4: Simplify right side
    20,959.85x = 484,414,949.69
  5. Step 5: Solve for x
    x = 484,414,949.69/20,959.85
  6. Step 6: Final answer
    x = 23,111.57

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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.