Home / 28,132.92-38,821.86-15,383.57

Finding the Fourth Proportional to 28,132.92, 38,821.86 and 15,383.57

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Solution

The fourth proportional to 28,132.92, 38,821.86 and 15,383.57 is: 21,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.92 : 38,821.86 = 15,383.57 : x
  2. Step 2: Convert to fraction form
    28,132.92/38,821.86 = 15,383.57/x
  3. Step 3: Cross multiply
    28,132.92x = 38,821.86 × 15,383.57
  4. Step 4: Simplify right side
    28,132.92x = 597,218,529.81
  5. Step 5: Solve for x
    x = 597,218,529.81/28,132.92
  6. Step 6: Final answer
    x = 21,228.46

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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.