Home / 13,275.71-18,316.78-8,240.15

Finding the Fourth Proportional to 13,275.71, 18,316.78 and 8,240.15

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Solution

The fourth proportional to 13,275.71, 18,316.78 and 8,240.15 is: 11,369.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.71 : 18,316.78 = 8,240.15 : x
  2. Step 2: Convert to fraction form
    13,275.71/18,316.78 = 8,240.15/x
  3. Step 3: Cross multiply
    13,275.71x = 18,316.78 × 8,240.15
  4. Step 4: Simplify right side
    13,275.71x = 150,932,902.53
  5. Step 5: Solve for x
    x = 150,932,902.53/13,275.71
  6. Step 6: Final answer
    x = 11,369.10

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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.