Home / 13,242.66-19,863.95-8,315.75

Finding the Fourth Proportional to 13,242.66, 19,863.95 and 8,315.75

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Solution

The fourth proportional to 13,242.66, 19,863.95 and 8,315.75 is: 12,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.66 : 19,863.95 = 8,315.75 : x
  2. Step 2: Convert to fraction form
    13,242.66/19,863.95 = 8,315.75/x
  3. Step 3: Cross multiply
    13,242.66x = 19,863.95 × 8,315.75
  4. Step 4: Simplify right side
    13,242.66x = 165,183,650.29
  5. Step 5: Solve for x
    x = 165,183,650.29/13,242.66
  6. Step 6: Final answer
    x = 12,473.60

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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.