Home / 23,280.78-32,128.20-13,209.65

Finding the Fourth Proportional to 23,280.78, 32,128.20 and 13,209.65

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Solution

The fourth proportional to 23,280.78, 32,128.20 and 13,209.65 is: 18,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,280.78 : 32,128.20 = 13,209.65 : x
  2. Step 2: Convert to fraction form
    23,280.78/32,128.20 = 13,209.65/x
  3. Step 3: Cross multiply
    23,280.78x = 32,128.20 × 13,209.65
  4. Step 4: Simplify right side
    23,280.78x = 424,402,116.49
  5. Step 5: Solve for x
    x = 424,402,116.49/23,280.78
  6. Step 6: Final answer
    x = 18,229.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.