Home / 22,515.09-31,074.68-13,089.12

Finding the Fourth Proportional to 22,515.09, 31,074.68 and 13,089.12

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Solution

The fourth proportional to 22,515.09, 31,074.68 and 13,089.12 is: 18,065.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.09 : 31,074.68 = 13,089.12 : x
  2. Step 2: Convert to fraction form
    22,515.09/31,074.68 = 13,089.12/x
  3. Step 3: Cross multiply
    22,515.09x = 31,074.68 × 13,089.12
  4. Step 4: Simplify right side
    22,515.09x = 406,740,248.20
  5. Step 5: Solve for x
    x = 406,740,248.20/22,515.09
  6. Step 6: Final answer
    x = 18,065.23

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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.