Home / 13,275.29-18,321.09-7,612.04

Finding the Fourth Proportional to 13,275.29, 18,321.09 and 7,612.04

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Solution

The fourth proportional to 13,275.29, 18,321.09 and 7,612.04 is: 10,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.29 : 18,321.09 = 7,612.04 : x
  2. Step 2: Convert to fraction form
    13,275.29/18,321.09 = 7,612.04/x
  3. Step 3: Cross multiply
    13,275.29x = 18,321.09 × 7,612.04
  4. Step 4: Simplify right side
    13,275.29x = 139,460,915.73
  5. Step 5: Solve for x
    x = 139,460,915.73/13,275.29
  6. Step 6: Final answer
    x = 10,505.30

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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.