Home / 28,015.16-38,660.33-15,439.91

Finding the Fourth Proportional to 28,015.16, 38,660.33 and 15,439.91

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Solution

The fourth proportional to 28,015.16, 38,660.33 and 15,439.91 is: 21,306.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.16 : 38,660.33 = 15,439.91 : x
  2. Step 2: Convert to fraction form
    28,015.16/38,660.33 = 15,439.91/x
  3. Step 3: Cross multiply
    28,015.16x = 38,660.33 × 15,439.91
  4. Step 4: Simplify right side
    28,015.16x = 596,911,745.27
  5. Step 5: Solve for x
    x = 596,911,745.27/28,015.16
  6. Step 6: Final answer
    x = 21,306.74

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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.