Home / 20,877.08-28,820.22-12,924.50

Finding the Fourth Proportional to 20,877.08, 28,820.22 and 12,924.50

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Solution

The fourth proportional to 20,877.08, 28,820.22 and 12,924.50 is: 17,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.08 : 28,820.22 = 12,924.50 : x
  2. Step 2: Convert to fraction form
    20,877.08/28,820.22 = 12,924.50/x
  3. Step 3: Cross multiply
    20,877.08x = 28,820.22 × 12,924.50
  4. Step 4: Simplify right side
    20,877.08x = 372,486,933.39
  5. Step 5: Solve for x
    x = 372,486,933.39/20,877.08
  6. Step 6: Final answer
    x = 17,841.91

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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.