Home / 20,543.40-30,815.17-5,752.40

Finding the Fourth Proportional to 20,543.40, 30,815.17 and 5,752.40

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Solution

The fourth proportional to 20,543.40, 30,815.17 and 5,752.40 is: 8,628.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.40 : 30,815.17 = 5,752.40 : x
  2. Step 2: Convert to fraction form
    20,543.40/30,815.17 = 5,752.40/x
  3. Step 3: Cross multiply
    20,543.40x = 30,815.17 × 5,752.40
  4. Step 4: Simplify right side
    20,543.40x = 177,261,015.45
  5. Step 5: Solve for x
    x = 177,261,015.45/20,543.40
  6. Step 6: Final answer
    x = 8,628.61

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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.