Home / 16,885.70-25,328.55-13,605.20

Finding the Fourth Proportional to 16,885.70, 25,328.55 and 13,605.20

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Solution

The fourth proportional to 16,885.70, 25,328.55 and 13,605.20 is: 20,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,885.70 : 25,328.55 = 13,605.20 : x
  2. Step 2: Convert to fraction form
    16,885.70/25,328.55 = 13,605.20/x
  3. Step 3: Cross multiply
    16,885.70x = 25,328.55 × 13,605.20
  4. Step 4: Simplify right side
    16,885.70x = 344,599,988.46
  5. Step 5: Solve for x
    x = 344,599,988.46/16,885.70
  6. Step 6: Final answer
    x = 20,407.80

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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.