Home / 12,347.06-18,520.60-3,113.06

Finding the Fourth Proportional to 12,347.06, 18,520.60 and 3,113.06

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Solution

The fourth proportional to 12,347.06, 18,520.60 and 3,113.06 is: 4,669.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.06 : 18,520.60 = 3,113.06 : x
  2. Step 2: Convert to fraction form
    12,347.06/18,520.60 = 3,113.06/x
  3. Step 3: Cross multiply
    12,347.06x = 18,520.60 × 3,113.06
  4. Step 4: Simplify right side
    12,347.06x = 57,655,777.55
  5. Step 5: Solve for x
    x = 57,655,777.55/12,347.06
  6. Step 6: Final answer
    x = 4,669.59

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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.