Home / 28,251.16-38,986.56-15,504.42

Finding the Fourth Proportional to 28,251.16, 38,986.56 and 15,504.42

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Solution

The fourth proportional to 28,251.16, 38,986.56 and 15,504.42 is: 21,396.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.16 : 38,986.56 = 15,504.42 : x
  2. Step 2: Convert to fraction form
    28,251.16/38,986.56 = 15,504.42/x
  3. Step 3: Cross multiply
    28,251.16x = 38,986.56 × 15,504.42
  4. Step 4: Simplify right side
    28,251.16x = 604,464,000.60
  5. Step 5: Solve for x
    x = 604,464,000.60/28,251.16
  6. Step 6: Final answer
    x = 21,396.08

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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.