Home / 28,170.06-38,874.30-15,423.08

Finding the Fourth Proportional to 28,170.06, 38,874.30 and 15,423.08

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Solution

The fourth proportional to 28,170.06, 38,874.30 and 15,423.08 is: 21,283.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.06 : 38,874.30 = 15,423.08 : x
  2. Step 2: Convert to fraction form
    28,170.06/38,874.30 = 15,423.08/x
  3. Step 3: Cross multiply
    28,170.06x = 38,874.30 × 15,423.08
  4. Step 4: Simplify right side
    28,170.06x = 599,561,438.84
  5. Step 5: Solve for x
    x = 599,561,438.84/28,170.06
  6. Step 6: Final answer
    x = 21,283.64

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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.