Home / 20,659.62-30,981.93-11,306.55

Finding the Fourth Proportional to 20,659.62, 30,981.93 and 11,306.55

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Solution

The fourth proportional to 20,659.62, 30,981.93 and 11,306.55 is: 16,955.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.62 : 30,981.93 = 11,306.55 : x
  2. Step 2: Convert to fraction form
    20,659.62/30,981.93 = 11,306.55/x
  3. Step 3: Cross multiply
    20,659.62x = 30,981.93 × 11,306.55
  4. Step 4: Simplify right side
    20,659.62x = 350,298,740.64
  5. Step 5: Solve for x
    x = 350,298,740.64/20,659.62
  6. Step 6: Final answer
    x = 16,955.72

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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.