Home / 20,877.48-28,810.86-11,446.05

Finding the Fourth Proportional to 20,877.48, 28,810.86 and 11,446.05

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Solution

The fourth proportional to 20,877.48, 28,810.86 and 11,446.05 is: 15,795.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.48 : 28,810.86 = 11,446.05 : x
  2. Step 2: Convert to fraction form
    20,877.48/28,810.86 = 11,446.05/x
  3. Step 3: Cross multiply
    20,877.48x = 28,810.86 × 11,446.05
  4. Step 4: Simplify right side
    20,877.48x = 329,770,544.10
  5. Step 5: Solve for x
    x = 329,770,544.10/20,877.48
  6. Step 6: Final answer
    x = 15,795.51

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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.