Home / 28,254.92-38,987.46-16,921.76

Finding the Fourth Proportional to 28,254.92, 38,987.46 and 16,921.76

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Solution

The fourth proportional to 28,254.92, 38,987.46 and 16,921.76 is: 23,349.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.92 : 38,987.46 = 16,921.76 : x
  2. Step 2: Convert to fraction form
    28,254.92/38,987.46 = 16,921.76/x
  3. Step 3: Cross multiply
    28,254.92x = 38,987.46 × 16,921.76
  4. Step 4: Simplify right side
    28,254.92x = 659,736,441.13
  5. Step 5: Solve for x
    x = 659,736,441.13/28,254.92
  6. Step 6: Final answer
    x = 23,349.44

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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.