Home / 28,833.18-39,767.40-18,218.94

Finding the Fourth Proportional to 28,833.18, 39,767.40 and 18,218.94

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Solution

The fourth proportional to 28,833.18, 39,767.40 and 18,218.94 is: 25,127.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,833.18 : 39,767.40 = 18,218.94 : x
  2. Step 2: Convert to fraction form
    28,833.18/39,767.40 = 18,218.94/x
  3. Step 3: Cross multiply
    28,833.18x = 39,767.40 × 18,218.94
  4. Step 4: Simplify right side
    28,833.18x = 724,519,874.56
  5. Step 5: Solve for x
    x = 724,519,874.56/28,833.18
  6. Step 6: Final answer
    x = 25,127.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.