Home / 20,877.62-28,813.10-11,926.46

Finding the Fourth Proportional to 20,877.62, 28,813.10 and 11,926.46

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Solution

The fourth proportional to 20,877.62, 28,813.10 and 11,926.46 is: 16,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.62 : 28,813.10 = 11,926.46 : x
  2. Step 2: Convert to fraction form
    20,877.62/28,813.10 = 11,926.46/x
  3. Step 3: Cross multiply
    20,877.62x = 28,813.10 × 11,926.46
  4. Step 4: Simplify right side
    20,877.62x = 343,638,284.63
  5. Step 5: Solve for x
    x = 343,638,284.63/20,877.62
  6. Step 6: Final answer
    x = 16,459.65

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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.