Home / 28,029.12-38,680.08-15,454.56

Finding the Fourth Proportional to 28,029.12, 38,680.08 and 15,454.56

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Solution

The fourth proportional to 28,029.12, 38,680.08 and 15,454.56 is: 21,327.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029.12 : 38,680.08 = 15,454.56 : x
  2. Step 2: Convert to fraction form
    28,029.12/38,680.08 = 15,454.56/x
  3. Step 3: Cross multiply
    28,029.12x = 38,680.08 × 15,454.56
  4. Step 4: Simplify right side
    28,029.12x = 597,783,617.16
  5. Step 5: Solve for x
    x = 597,783,617.16/28,029.12
  6. Step 6: Final answer
    x = 21,327.23

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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.