Home / 15,611.21-21,545.43-10,238.16

Finding the Fourth Proportional to 15,611.21, 21,545.43 and 10,238.16

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Solution

The fourth proportional to 15,611.21, 21,545.43 and 10,238.16 is: 14,129.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.21 : 21,545.43 = 10,238.16 : x
  2. Step 2: Convert to fraction form
    15,611.21/21,545.43 = 10,238.16/x
  3. Step 3: Cross multiply
    15,611.21x = 21,545.43 × 10,238.16
  4. Step 4: Simplify right side
    15,611.21x = 220,585,559.61
  5. Step 5: Solve for x
    x = 220,585,559.61/15,611.21
  6. Step 6: Final answer
    x = 14,129.95

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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.