Home / 13,348.56-18,421.60-8,315.76

Finding the Fourth Proportional to 13,348.56, 18,421.60 and 8,315.76

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Solution

The fourth proportional to 13,348.56, 18,421.60 and 8,315.76 is: 11,476.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.56 : 18,421.60 = 8,315.76 : x
  2. Step 2: Convert to fraction form
    13,348.56/18,421.60 = 8,315.76/x
  3. Step 3: Cross multiply
    13,348.56x = 18,421.60 × 8,315.76
  4. Step 4: Simplify right side
    13,348.56x = 153,189,604.42
  5. Step 5: Solve for x
    x = 153,189,604.42/13,348.56
  6. Step 6: Final answer
    x = 11,476.11

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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.