Home / 28,436.90-39,255.50-18,370.24

Finding the Fourth Proportional to 28,436.90, 39,255.50 and 18,370.24

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Solution

The fourth proportional to 28,436.90, 39,255.50 and 18,370.24 is: 25,359.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.90 : 39,255.50 = 18,370.24 : x
  2. Step 2: Convert to fraction form
    28,436.90/39,255.50 = 18,370.24/x
  3. Step 3: Cross multiply
    28,436.90x = 39,255.50 × 18,370.24
  4. Step 4: Simplify right side
    28,436.90x = 721,133,100.38
  5. Step 5: Solve for x
    x = 721,133,100.38/28,436.90
  6. Step 6: Final answer
    x = 25,359.06

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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.