Home / 21,990.29-32,985.43-18,082.85

Finding the Fourth Proportional to 21,990.29, 32,985.43 and 18,082.85

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Solution

The fourth proportional to 21,990.29, 32,985.43 and 18,082.85 is: 27,124.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.29 : 32,985.43 = 18,082.85 : x
  2. Step 2: Convert to fraction form
    21,990.29/32,985.43 = 18,082.85/x
  3. Step 3: Cross multiply
    21,990.29x = 32,985.43 × 18,082.85
  4. Step 4: Simplify right side
    21,990.29x = 596,470,372.74
  5. Step 5: Solve for x
    x = 596,470,372.74/21,990.29
  6. Step 6: Final answer
    x = 27,124.27

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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.