Home / 15,849.21-21,870.39-9,474.54

Finding the Fourth Proportional to 15,849.21, 21,870.39 and 9,474.54

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Solution

The fourth proportional to 15,849.21, 21,870.39 and 9,474.54 is: 13,073.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.21 : 21,870.39 = 9,474.54 : x
  2. Step 2: Convert to fraction form
    15,849.21/21,870.39 = 9,474.54/x
  3. Step 3: Cross multiply
    15,849.21x = 21,870.39 × 9,474.54
  4. Step 4: Simplify right side
    15,849.21x = 207,211,728.15
  5. Step 5: Solve for x
    x = 207,211,728.15/15,849.21
  6. Step 6: Final answer
    x = 13,073.95

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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.