Home / 28,035.28-38,687.92-15,288.81

Finding the Fourth Proportional to 28,035.28, 38,687.92 and 15,288.81

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Solution

The fourth proportional to 28,035.28, 38,687.92 and 15,288.81 is: 21,098.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.28 : 38,687.92 = 15,288.81 : x
  2. Step 2: Convert to fraction form
    28,035.28/38,687.92 = 15,288.81/x
  3. Step 3: Cross multiply
    28,035.28x = 38,687.92 × 15,288.81
  4. Step 4: Simplify right side
    28,035.28x = 591,492,258.18
  5. Step 5: Solve for x
    x = 591,492,258.18/28,035.28
  6. Step 6: Final answer
    x = 21,098.14

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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.