Home / 28,365.03-39,143.42-15,617.95

Finding the Fourth Proportional to 28,365.03, 39,143.42 and 15,617.95

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Solution

The fourth proportional to 28,365.03, 39,143.42 and 15,617.95 is: 21,552.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.03 : 39,143.42 = 15,617.95 : x
  2. Step 2: Convert to fraction form
    28,365.03/39,143.42 = 15,617.95/x
  3. Step 3: Cross multiply
    28,365.03x = 39,143.42 × 15,617.95
  4. Step 4: Simplify right side
    28,365.03x = 611,339,898.30
  5. Step 5: Solve for x
    x = 611,339,898.30/28,365.03
  6. Step 6: Final answer
    x = 21,552.59

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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.