Home / 15,278.85-22,813.75-13,687.30

Finding the Fourth Proportional to 15,278.85, 22,813.75 and 13,687.30

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Solution

The fourth proportional to 15,278.85, 22,813.75 and 13,687.30 is: 20,437.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.85 : 22,813.75 = 13,687.30 : x
  2. Step 2: Convert to fraction form
    15,278.85/22,813.75 = 13,687.30/x
  3. Step 3: Cross multiply
    15,278.85x = 22,813.75 × 13,687.30
  4. Step 4: Simplify right side
    15,278.85x = 312,258,549.12
  5. Step 5: Solve for x
    x = 312,258,549.12/15,278.85
  6. Step 6: Final answer
    x = 20,437.31

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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.