Home / 22,615.21-31,210.90-12,546.89

Finding the Fourth Proportional to 22,615.21, 31,210.90 and 12,546.89

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Solution

The fourth proportional to 22,615.21, 31,210.90 and 12,546.89 is: 17,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.21 : 31,210.90 = 12,546.89 : x
  2. Step 2: Convert to fraction form
    22,615.21/31,210.90 = 12,546.89/x
  3. Step 3: Cross multiply
    22,615.21x = 31,210.90 × 12,546.89
  4. Step 4: Simplify right side
    22,615.21x = 391,599,729.10
  5. Step 5: Solve for x
    x = 391,599,729.10/22,615.21
  6. Step 6: Final answer
    x = 17,315.77

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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.