Home / 22,615.75-31,209.74-12,679.75

Finding the Fourth Proportional to 22,615.75, 31,209.74 and 12,679.75

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Solution

The fourth proportional to 22,615.75, 31,209.74 and 12,679.75 is: 17,498.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.75 : 31,209.74 = 12,679.75 : x
  2. Step 2: Convert to fraction form
    22,615.75/31,209.74 = 12,679.75/x
  3. Step 3: Cross multiply
    22,615.75x = 31,209.74 × 12,679.75
  4. Step 4: Simplify right side
    22,615.75x = 395,731,700.77
  5. Step 5: Solve for x
    x = 395,731,700.77/22,615.75
  6. Step 6: Final answer
    x = 17,498.06

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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.