Home / 23,830.80-32,886.10-13,220.20

Finding the Fourth Proportional to 23,830.80, 32,886.10 and 13,220.20

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Solution

The fourth proportional to 23,830.80, 32,886.10 and 13,220.20 is: 18,243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,830.80 : 32,886.10 = 13,220.20 : x
  2. Step 2: Convert to fraction form
    23,830.80/32,886.10 = 13,220.20/x
  3. Step 3: Cross multiply
    23,830.80x = 32,886.10 × 13,220.20
  4. Step 4: Simplify right side
    23,830.80x = 434,760,819.22
  5. Step 5: Solve for x
    x = 434,760,819.22/23,830.80
  6. Step 6: Final answer
    x = 18,243.65

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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.