Home / 21,590.40-32,331.54-13,669.04

Finding the Fourth Proportional to 21,590.40, 32,331.54 and 13,669.04

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Solution

The fourth proportional to 21,590.40, 32,331.54 and 13,669.04 is: 20,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.40 : 32,331.54 = 13,669.04 : x
  2. Step 2: Convert to fraction form
    21,590.40/32,331.54 = 13,669.04/x
  3. Step 3: Cross multiply
    21,590.40x = 32,331.54 × 13,669.04
  4. Step 4: Simplify right side
    21,590.40x = 441,941,113.52
  5. Step 5: Solve for x
    x = 441,941,113.52/21,590.40
  6. Step 6: Final answer
    x = 20,469.33

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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.