Home / 20,728.51-30,941.95-18,104.11

Finding the Fourth Proportional to 20,728.51, 30,941.95 and 18,104.11

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Solution

The fourth proportional to 20,728.51, 30,941.95 and 18,104.11 is: 27,024.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.51 : 30,941.95 = 18,104.11 : x
  2. Step 2: Convert to fraction form
    20,728.51/30,941.95 = 18,104.11/x
  3. Step 3: Cross multiply
    20,728.51x = 30,941.95 × 18,104.11
  4. Step 4: Simplify right side
    20,728.51x = 560,176,377.74
  5. Step 5: Solve for x
    x = 560,176,377.74/20,728.51
  6. Step 6: Final answer
    x = 27,024.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.