Home / 15,907.20-21,954.84-9,191.92

Finding the Fourth Proportional to 15,907.20, 21,954.84 and 9,191.92

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Solution

The fourth proportional to 15,907.20, 21,954.84 and 9,191.92 is: 12,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,907.20 : 21,954.84 = 9,191.92 : x
  2. Step 2: Convert to fraction form
    15,907.20/21,954.84 = 9,191.92/x
  3. Step 3: Cross multiply
    15,907.20x = 21,954.84 × 9,191.92
  4. Step 4: Simplify right side
    15,907.20x = 201,807,132.89
  5. Step 5: Solve for x
    x = 201,807,132.89/15,907.20
  6. Step 6: Final answer
    x = 12,686.53

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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.