Home / 26,629.76-36,744-18,243.20

Finding the Fourth Proportional to 26,629.76, 36,744 and 18,243.20

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Solution

The fourth proportional to 26,629.76, 36,744 and 18,243.20 is: 25,172.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,629.76 : 36,744 = 18,243.20 : x
  2. Step 2: Convert to fraction form
    26,629.76/36,744 = 18,243.20/x
  3. Step 3: Cross multiply
    26,629.76x = 36,744 × 18,243.20
  4. Step 4: Simplify right side
    26,629.76x = 670,328,140.80
  5. Step 5: Solve for x
    x = 670,328,140.80/26,629.76
  6. Step 6: Final answer
    x = 25,172.14

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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.