Home / 22,515.15-31,064.72-12,954.63

Finding the Fourth Proportional to 22,515.15, 31,064.72 and 12,954.63

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Solution

The fourth proportional to 22,515.15, 31,064.72 and 12,954.63 is: 17,873.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.15 : 31,064.72 = 12,954.63 : x
  2. Step 2: Convert to fraction form
    22,515.15/31,064.72 = 12,954.63/x
  3. Step 3: Cross multiply
    22,515.15x = 31,064.72 × 12,954.63
  4. Step 4: Simplify right side
    22,515.15x = 402,431,888.88
  5. Step 5: Solve for x
    x = 402,431,888.88/22,515.15
  6. Step 6: Final answer
    x = 17,873.83

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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.