Home / 21,330.10-31,995.15-16,923.70

Finding the Fourth Proportional to 21,330.10, 31,995.15 and 16,923.70

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Solution

The fourth proportional to 21,330.10, 31,995.15 and 16,923.70 is: 25,385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.10 : 31,995.15 = 16,923.70 : x
  2. Step 2: Convert to fraction form
    21,330.10/31,995.15 = 16,923.70/x
  3. Step 3: Cross multiply
    21,330.10x = 31,995.15 × 16,923.70
  4. Step 4: Simplify right side
    21,330.10x = 541,476,320.06
  5. Step 5: Solve for x
    x = 541,476,320.06/21,330.10
  6. Step 6: Final answer
    x = 25,385.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.