Home / 23,145.40-31,920.78-18,101.80

Finding the Fourth Proportional to 23,145.40, 31,920.78 and 18,101.80

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Solution

The fourth proportional to 23,145.40, 31,920.78 and 18,101.80 is: 24,964.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,145.40 : 31,920.78 = 18,101.80 : x
  2. Step 2: Convert to fraction form
    23,145.40/31,920.78 = 18,101.80/x
  3. Step 3: Cross multiply
    23,145.40x = 31,920.78 × 18,101.80
  4. Step 4: Simplify right side
    23,145.40x = 577,823,575.40
  5. Step 5: Solve for x
    x = 577,823,575.40/23,145.40
  6. Step 6: Final answer
    x = 24,964.94

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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.