Home / 22,955.18-31,678.16-12,884.58

Finding the Fourth Proportional to 22,955.18, 31,678.16 and 12,884.58

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Solution

The fourth proportional to 22,955.18, 31,678.16 and 12,884.58 is: 17,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,955.18 : 31,678.16 = 12,884.58 : x
  2. Step 2: Convert to fraction form
    22,955.18/31,678.16 = 12,884.58/x
  3. Step 3: Cross multiply
    22,955.18x = 31,678.16 × 12,884.58
  4. Step 4: Simplify right side
    22,955.18x = 408,159,722.35
  5. Step 5: Solve for x
    x = 408,159,722.35/22,955.18
  6. Step 6: Final answer
    x = 17,780.73

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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.