Home / 20,889.83-28,829.50-11,937.15

Finding the Fourth Proportional to 20,889.83, 28,829.50 and 11,937.15

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Solution

The fourth proportional to 20,889.83, 28,829.50 and 11,937.15 is: 16,474.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.83 : 28,829.50 = 11,937.15 : x
  2. Step 2: Convert to fraction form
    20,889.83/28,829.50 = 11,937.15/x
  3. Step 3: Cross multiply
    20,889.83x = 28,829.50 × 11,937.15
  4. Step 4: Simplify right side
    20,889.83x = 344,142,036.08
  5. Step 5: Solve for x
    x = 344,142,036.08/20,889.83
  6. Step 6: Final answer
    x = 16,474.14

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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.