Home / 21,153.94-29,184.13-13,599.07

Finding the Fourth Proportional to 21,153.94, 29,184.13 and 13,599.07

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Solution

The fourth proportional to 21,153.94, 29,184.13 and 13,599.07 is: 18,761.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.94 : 29,184.13 = 13,599.07 : x
  2. Step 2: Convert to fraction form
    21,153.94/29,184.13 = 13,599.07/x
  3. Step 3: Cross multiply
    21,153.94x = 29,184.13 × 13,599.07
  4. Step 4: Simplify right side
    21,153.94x = 396,876,970.80
  5. Step 5: Solve for x
    x = 396,876,970.80/21,153.94
  6. Step 6: Final answer
    x = 18,761.38

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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.