Home / 20,432.07-28,196.99-11,479.40

Finding the Fourth Proportional to 20,432.07, 28,196.99 and 11,479.40

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Solution

The fourth proportional to 20,432.07, 28,196.99 and 11,479.40 is: 15,841.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.07 : 28,196.99 = 11,479.40 : x
  2. Step 2: Convert to fraction form
    20,432.07/28,196.99 = 11,479.40/x
  3. Step 3: Cross multiply
    20,432.07x = 28,196.99 × 11,479.40
  4. Step 4: Simplify right side
    20,432.07x = 323,684,365.82
  5. Step 5: Solve for x
    x = 323,684,365.82/20,432.07
  6. Step 6: Final answer
    x = 15,841.97

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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.