Home / 22,515.12-31,073.28-12,955.44

Finding the Fourth Proportional to 22,515.12, 31,073.28 and 12,955.44

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Solution

The fourth proportional to 22,515.12, 31,073.28 and 12,955.44 is: 17,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.12 : 31,073.28 = 12,955.44 : x
  2. Step 2: Convert to fraction form
    22,515.12/31,073.28 = 12,955.44/x
  3. Step 3: Cross multiply
    22,515.12x = 31,073.28 × 12,955.44
  4. Step 4: Simplify right side
    22,515.12x = 402,568,014.64
  5. Step 5: Solve for x
    x = 402,568,014.64/22,515.12
  6. Step 6: Final answer
    x = 17,879.90

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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.