Home / 21,065.66-29,061.57-12,111.26

Finding the Fourth Proportional to 21,065.66, 29,061.57 and 12,111.26

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Solution

The fourth proportional to 21,065.66, 29,061.57 and 12,111.26 is: 16,708.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.66 : 29,061.57 = 12,111.26 : x
  2. Step 2: Convert to fraction form
    21,065.66/29,061.57 = 12,111.26/x
  3. Step 3: Cross multiply
    21,065.66x = 29,061.57 × 12,111.26
  4. Step 4: Simplify right side
    21,065.66x = 351,972,084.97
  5. Step 5: Solve for x
    x = 351,972,084.97/21,065.66
  6. Step 6: Final answer
    x = 16,708.34

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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.