Home / 28,687.83-39,585.74-15,940.95

Finding the Fourth Proportional to 28,687.83, 39,585.74 and 15,940.95

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Solution

The fourth proportional to 28,687.83, 39,585.74 and 15,940.95 is: 21,996.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687.83 : 39,585.74 = 15,940.95 : x
  2. Step 2: Convert to fraction form
    28,687.83/39,585.74 = 15,940.95/x
  3. Step 3: Cross multiply
    28,687.83x = 39,585.74 × 15,940.95
  4. Step 4: Simplify right side
    28,687.83x = 631,034,302.05
  5. Step 5: Solve for x
    x = 631,034,302.05/28,687.83
  6. Step 6: Final answer
    x = 21,996.59

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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.