Home / 20,333.39-30,479.20-11,549.55

Finding the Fourth Proportional to 20,333.39, 30,479.20 and 11,549.55

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Solution

The fourth proportional to 20,333.39, 30,479.20 and 11,549.55 is: 17,312.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.39 : 30,479.20 = 11,549.55 : x
  2. Step 2: Convert to fraction form
    20,333.39/30,479.20 = 11,549.55/x
  3. Step 3: Cross multiply
    20,333.39x = 30,479.20 × 11,549.55
  4. Step 4: Simplify right side
    20,333.39x = 352,020,834.22
  5. Step 5: Solve for x
    x = 352,020,834.22/20,333.39
  6. Step 6: Final answer
    x = 17,312.46

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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.