Home / 20,835.52-28,753.70-11,404.08

Finding the Fourth Proportional to 20,835.52, 28,753.70 and 11,404.08

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Solution

The fourth proportional to 20,835.52, 28,753.70 and 11,404.08 is: 15,738.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.52 : 28,753.70 = 11,404.08 : x
  2. Step 2: Convert to fraction form
    20,835.52/28,753.70 = 11,404.08/x
  3. Step 3: Cross multiply
    20,835.52x = 28,753.70 × 11,404.08
  4. Step 4: Simplify right side
    20,835.52x = 327,909,438.08
  5. Step 5: Solve for x
    x = 327,909,438.08/20,835.52
  6. Step 6: Final answer
    x = 15,738.00

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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.