Home / 28,424-39,225.12-15,849.56

Finding the Fourth Proportional to 28,424, 39,225.12 and 15,849.56

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Solution

The fourth proportional to 28,424, 39,225.12 and 15,849.56 is: 21,872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424 : 39,225.12 = 15,849.56 : x
  2. Step 2: Convert to fraction form
    28,424/39,225.12 = 15,849.56/x
  3. Step 3: Cross multiply
    28,424x = 39,225.12 × 15,849.56
  4. Step 4: Simplify right side
    28,424x = 621,700,892.95
  5. Step 5: Solve for x
    x = 621,700,892.95/28,424
  6. Step 6: Final answer
    x = 21,872.39

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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.