Home / 20,344.84-28,074.63-11,390.83

Finding the Fourth Proportional to 20,344.84, 28,074.63 and 11,390.83

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Solution

The fourth proportional to 20,344.84, 28,074.63 and 11,390.83 is: 15,718.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.84 : 28,074.63 = 11,390.83 : x
  2. Step 2: Convert to fraction form
    20,344.84/28,074.63 = 11,390.83/x
  3. Step 3: Cross multiply
    20,344.84x = 28,074.63 × 11,390.83
  4. Step 4: Simplify right side
    20,344.84x = 319,793,337.64
  5. Step 5: Solve for x
    x = 319,793,337.64/20,344.84
  6. Step 6: Final answer
    x = 15,718.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.