Home / 28,086.15-38,759.01-15,339.13

Finding the Fourth Proportional to 28,086.15, 38,759.01 and 15,339.13

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Solution

The fourth proportional to 28,086.15, 38,759.01 and 15,339.13 is: 21,168.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.15 : 38,759.01 = 15,339.13 : x
  2. Step 2: Convert to fraction form
    28,086.15/38,759.01 = 15,339.13/x
  3. Step 3: Cross multiply
    28,086.15x = 38,759.01 × 15,339.13
  4. Step 4: Simplify right side
    28,086.15x = 594,529,396.16
  5. Step 5: Solve for x
    x = 594,529,396.16/28,086.15
  6. Step 6: Final answer
    x = 21,168.06

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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.