Home / 15,885.40-23,828.10-12,206.20

Finding the Fourth Proportional to 15,885.40, 23,828.10 and 12,206.20

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Solution

The fourth proportional to 15,885.40, 23,828.10 and 12,206.20 is: 18,309.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,885.40 : 23,828.10 = 12,206.20 : x
  2. Step 2: Convert to fraction form
    15,885.40/23,828.10 = 12,206.20/x
  3. Step 3: Cross multiply
    15,885.40x = 23,828.10 × 12,206.20
  4. Step 4: Simplify right side
    15,885.40x = 290,850,554.22
  5. Step 5: Solve for x
    x = 290,850,554.22/15,885.40
  6. Step 6: Final answer
    x = 18,309.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.