Home / 15,278.60-22,813.38-13,687.05

Finding the Fourth Proportional to 15,278.60, 22,813.38 and 13,687.05

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Solution

The fourth proportional to 15,278.60, 22,813.38 and 13,687.05 is: 20,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.60 : 22,813.38 = 13,687.05 : x
  2. Step 2: Convert to fraction form
    15,278.60/22,813.38 = 13,687.05/x
  3. Step 3: Cross multiply
    15,278.60x = 22,813.38 × 13,687.05
  4. Step 4: Simplify right side
    15,278.60x = 312,247,690.23
  5. Step 5: Solve for x
    x = 312,247,690.23/15,278.60
  6. Step 6: Final answer
    x = 20,436.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.