Home / 13,085.92-18,052.78-8,721.26

Finding the Fourth Proportional to 13,085.92, 18,052.78 and 8,721.26

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Solution

The fourth proportional to 13,085.92, 18,052.78 and 8,721.26 is: 12,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.92 : 18,052.78 = 8,721.26 : x
  2. Step 2: Convert to fraction form
    13,085.92/18,052.78 = 8,721.26/x
  3. Step 3: Cross multiply
    13,085.92x = 18,052.78 × 8,721.26
  4. Step 4: Simplify right side
    13,085.92x = 157,442,988.10
  5. Step 5: Solve for x
    x = 157,442,988.10/13,085.92
  6. Step 6: Final answer
    x = 12,031.48

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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.