Home / 18,943.04-26,147.13-10,987.22

Finding the Fourth Proportional to 18,943.04, 26,147.13 and 10,987.22

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Solution

The fourth proportional to 18,943.04, 26,147.13 and 10,987.22 is: 15,165.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.04 : 26,147.13 = 10,987.22 : x
  2. Step 2: Convert to fraction form
    18,943.04/26,147.13 = 10,987.22/x
  3. Step 3: Cross multiply
    18,943.04x = 26,147.13 × 10,987.22
  4. Step 4: Simplify right side
    18,943.04x = 287,284,269.68
  5. Step 5: Solve for x
    x = 287,284,269.68/18,943.04
  6. Step 6: Final answer
    x = 15,165.69

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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.