Home / 13,515.92-18,686.76-10,382.48

Finding the Fourth Proportional to 13,515.92, 18,686.76 and 10,382.48

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Solution

The fourth proportional to 13,515.92, 18,686.76 and 10,382.48 is: 14,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.92 : 18,686.76 = 10,382.48 : x
  2. Step 2: Convert to fraction form
    13,515.92/18,686.76 = 10,382.48/x
  3. Step 3: Cross multiply
    13,515.92x = 18,686.76 × 10,382.48
  4. Step 4: Simplify right side
    13,515.92x = 194,014,911.96
  5. Step 5: Solve for x
    x = 194,014,911.96/13,515.92
  6. Step 6: Final answer
    x = 14,354.55

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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.