Home / 28,017.28-38,664.30-15,441.22

Finding the Fourth Proportional to 28,017.28, 38,664.30 and 15,441.22

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Solution

The fourth proportional to 28,017.28, 38,664.30 and 15,441.22 is: 21,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.28 : 38,664.30 = 15,441.22 : x
  2. Step 2: Convert to fraction form
    28,017.28/38,664.30 = 15,441.22/x
  3. Step 3: Cross multiply
    28,017.28x = 38,664.30 × 15,441.22
  4. Step 4: Simplify right side
    28,017.28x = 597,023,962.45
  5. Step 5: Solve for x
    x = 597,023,962.45/28,017.28
  6. Step 6: Final answer
    x = 21,309.13

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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.