Home / 28,228.28-38,954.10-15,653.96

Finding the Fourth Proportional to 28,228.28, 38,954.10 and 15,653.96

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Solution

The fourth proportional to 28,228.28, 38,954.10 and 15,653.96 is: 21,601.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.28 : 38,954.10 = 15,653.96 : x
  2. Step 2: Convert to fraction form
    28,228.28/38,954.10 = 15,653.96/x
  3. Step 3: Cross multiply
    28,228.28x = 38,954.10 × 15,653.96
  4. Step 4: Simplify right side
    28,228.28x = 609,785,923.24
  5. Step 5: Solve for x
    x = 609,785,923.24/28,228.28
  6. Step 6: Final answer
    x = 21,601.95

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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.