Home / 15,121.16-20,855.84-10,646.18

Finding the Fourth Proportional to 15,121.16, 20,855.84 and 10,646.18

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Solution

The fourth proportional to 15,121.16, 20,855.84 and 10,646.18 is: 14,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.16 : 20,855.84 = 10,646.18 : x
  2. Step 2: Convert to fraction form
    15,121.16/20,855.84 = 10,646.18/x
  3. Step 3: Cross multiply
    15,121.16x = 20,855.84 × 10,646.18
  4. Step 4: Simplify right side
    15,121.16x = 222,035,026.69
  5. Step 5: Solve for x
    x = 222,035,026.69/15,121.16
  6. Step 6: Final answer
    x = 14,683.73

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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.