Home / 28,363.34-42,506.67-20,479.34

Finding the Fourth Proportional to 28,363.34, 42,506.67 and 20,479.34

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Solution

The fourth proportional to 28,363.34, 42,506.67 and 20,479.34 is: 30,691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.34 : 42,506.67 = 20,479.34 : x
  2. Step 2: Convert to fraction form
    28,363.34/42,506.67 = 20,479.34/x
  3. Step 3: Cross multiply
    28,363.34x = 42,506.67 × 20,479.34
  4. Step 4: Simplify right side
    28,363.34x = 870,508,547.20
  5. Step 5: Solve for x
    x = 870,508,547.20/28,363.34
  6. Step 6: Final answer
    x = 30,691.33

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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.