Home / 21,707.40-32,561.10-20,152.20

Finding the Fourth Proportional to 21,707.40, 32,561.10 and 20,152.20

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Solution

The fourth proportional to 21,707.40, 32,561.10 and 20,152.20 is: 30,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.40 : 32,561.10 = 20,152.20 : x
  2. Step 2: Convert to fraction form
    21,707.40/32,561.10 = 20,152.20/x
  3. Step 3: Cross multiply
    21,707.40x = 32,561.10 × 20,152.20
  4. Step 4: Simplify right side
    21,707.40x = 656,177,799.42
  5. Step 5: Solve for x
    x = 656,177,799.42/21,707.40
  6. Step 6: Final answer
    x = 30,228.30

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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.