Home / 20,834.64-30,984.36-20,178.48

Finding the Fourth Proportional to 20,834.64, 30,984.36 and 20,178.48

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Solution

The fourth proportional to 20,834.64, 30,984.36 and 20,178.48 is: 30,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.64 : 30,984.36 = 20,178.48 : x
  2. Step 2: Convert to fraction form
    20,834.64/30,984.36 = 20,178.48/x
  3. Step 3: Cross multiply
    20,834.64x = 30,984.36 × 20,178.48
  4. Step 4: Simplify right side
    20,834.64x = 625,217,288.57
  5. Step 5: Solve for x
    x = 625,217,288.57/20,834.64
  6. Step 6: Final answer
    x = 30,008.55

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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.