Home / 20,434.28-30,641.36-6,395.76

Finding the Fourth Proportional to 20,434.28, 30,641.36 and 6,395.76

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Solution

The fourth proportional to 20,434.28, 30,641.36 and 6,395.76 is: 9,590.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.28 : 30,641.36 = 6,395.76 : x
  2. Step 2: Convert to fraction form
    20,434.28/30,641.36 = 6,395.76/x
  3. Step 3: Cross multiply
    20,434.28x = 30,641.36 × 6,395.76
  4. Step 4: Simplify right side
    20,434.28x = 195,974,752.65
  5. Step 5: Solve for x
    x = 195,974,752.65/20,434.28
  6. Step 6: Final answer
    x = 9,590.49

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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.