Home / 20,913.04-28,862.29-11,961.38

Finding the Fourth Proportional to 20,913.04, 28,862.29 and 11,961.38

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Solution

The fourth proportional to 20,913.04, 28,862.29 and 11,961.38 is: 16,508.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.04 : 28,862.29 = 11,961.38 : x
  2. Step 2: Convert to fraction form
    20,913.04/28,862.29 = 11,961.38/x
  3. Step 3: Cross multiply
    20,913.04x = 28,862.29 × 11,961.38
  4. Step 4: Simplify right side
    20,913.04x = 345,232,818.36
  5. Step 5: Solve for x
    x = 345,232,818.36/20,913.04
  6. Step 6: Final answer
    x = 16,508.02

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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.