Home / 21,111.47-29,134.20-11,552.19

Finding the Fourth Proportional to 21,111.47, 29,134.20 and 11,552.19

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Solution

The fourth proportional to 21,111.47, 29,134.20 and 11,552.19 is: 15,942.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.47 : 29,134.20 = 11,552.19 : x
  2. Step 2: Convert to fraction form
    21,111.47/29,134.20 = 11,552.19/x
  3. Step 3: Cross multiply
    21,111.47x = 29,134.20 × 11,552.19
  4. Step 4: Simplify right side
    21,111.47x = 336,563,870.53
  5. Step 5: Solve for x
    x = 336,563,870.53/21,111.47
  6. Step 6: Final answer
    x = 15,942.23

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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.