Home / 20,335.19-30,502.78-5,543.78

Finding the Fourth Proportional to 20,335.19, 30,502.78 and 5,543.78

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Solution

The fourth proportional to 20,335.19, 30,502.78 and 5,543.78 is: 8,315.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.19 : 30,502.78 = 5,543.78 : x
  2. Step 2: Convert to fraction form
    20,335.19/30,502.78 = 5,543.78/x
  3. Step 3: Cross multiply
    20,335.19x = 30,502.78 × 5,543.78
  4. Step 4: Simplify right side
    20,335.19x = 169,100,535.34
  5. Step 5: Solve for x
    x = 169,100,535.34/20,335.19
  6. Step 6: Final answer
    x = 8,315.66

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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.