Home / 15,936.28-21,990.28-8,862.28

Finding the Fourth Proportional to 15,936.28, 21,990.28 and 8,862.28

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Solution

The fourth proportional to 15,936.28, 21,990.28 and 8,862.28 is: 12,228.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.28 : 21,990.28 = 8,862.28 : x
  2. Step 2: Convert to fraction form
    15,936.28/21,990.28 = 8,862.28/x
  3. Step 3: Cross multiply
    15,936.28x = 21,990.28 × 8,862.28
  4. Step 4: Simplify right side
    15,936.28x = 194,884,018.64
  5. Step 5: Solve for x
    x = 194,884,018.64/15,936.28
  6. Step 6: Final answer
    x = 12,228.95

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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.