Home / 20,505.48-28,296.84-11,554.86

Finding the Fourth Proportional to 20,505.48, 28,296.84 and 11,554.86

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Solution

The fourth proportional to 20,505.48, 28,296.84 and 11,554.86 is: 15,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.48 : 28,296.84 = 11,554.86 : x
  2. Step 2: Convert to fraction form
    20,505.48/28,296.84 = 11,554.86/x
  3. Step 3: Cross multiply
    20,505.48x = 28,296.84 × 11,554.86
  4. Step 4: Simplify right side
    20,505.48x = 326,966,024.64
  5. Step 5: Solve for x
    x = 326,966,024.64/20,505.48
  6. Step 6: Final answer
    x = 15,945.30

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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.