Home / 21,158.55-31,737.83-18,566.55

Finding the Fourth Proportional to 21,158.55, 31,737.83 and 18,566.55

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Solution

The fourth proportional to 21,158.55, 31,737.83 and 18,566.55 is: 27,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.55 : 31,737.83 = 18,566.55 : x
  2. Step 2: Convert to fraction form
    21,158.55/31,737.83 = 18,566.55/x
  3. Step 3: Cross multiply
    21,158.55x = 31,737.83 × 18,566.55
  4. Step 4: Simplify right side
    21,158.55x = 589,261,914.75
  5. Step 5: Solve for x
    x = 589,261,914.75/21,158.55
  6. Step 6: Final answer
    x = 27,849.83

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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.