Home / 21,858.80-32,801.16-20,475.04

Finding the Fourth Proportional to 21,858.80, 32,801.16 and 20,475.04

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Solution

The fourth proportional to 21,858.80, 32,801.16 and 20,475.04 is: 30,724.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.80 : 32,801.16 = 20,475.04 : x
  2. Step 2: Convert to fraction form
    21,858.80/32,801.16 = 20,475.04/x
  3. Step 3: Cross multiply
    21,858.80x = 32,801.16 × 20,475.04
  4. Step 4: Simplify right side
    21,858.80x = 671,605,063.05
  5. Step 5: Solve for x
    x = 671,605,063.05/21,858.80
  6. Step 6: Final answer
    x = 30,724.70

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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.