Home / 20,934.12-31,264.93-18,756.84

Finding the Fourth Proportional to 20,934.12, 31,264.93 and 18,756.84

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Solution

The fourth proportional to 20,934.12, 31,264.93 and 18,756.84 is: 28,013.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.12 : 31,264.93 = 18,756.84 : x
  2. Step 2: Convert to fraction form
    20,934.12/31,264.93 = 18,756.84/x
  3. Step 3: Cross multiply
    20,934.12x = 31,264.93 × 18,756.84
  4. Step 4: Simplify right side
    20,934.12x = 586,431,289.62
  5. Step 5: Solve for x
    x = 586,431,289.62/20,934.12
  6. Step 6: Final answer
    x = 28,013.18

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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.