Home / 20,877.19-28,810.52-11,445.75

Finding the Fourth Proportional to 20,877.19, 28,810.52 and 11,445.75

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Solution

The fourth proportional to 20,877.19, 28,810.52 and 11,445.75 is: 15,795.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.19 : 28,810.52 = 11,445.75 : x
  2. Step 2: Convert to fraction form
    20,877.19/28,810.52 = 11,445.75/x
  3. Step 3: Cross multiply
    20,877.19x = 28,810.52 × 11,445.75
  4. Step 4: Simplify right side
    20,877.19x = 329,757,994.98
  5. Step 5: Solve for x
    x = 329,757,994.98/20,877.19
  6. Step 6: Final answer
    x = 15,795.14

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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.