Home / 21,324.75-29,428.95-11,895.13

Finding the Fourth Proportional to 21,324.75, 29,428.95 and 11,895.13

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Solution

The fourth proportional to 21,324.75, 29,428.95 and 11,895.13 is: 16,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.75 : 29,428.95 = 11,895.13 : x
  2. Step 2: Convert to fraction form
    21,324.75/29,428.95 = 11,895.13/x
  3. Step 3: Cross multiply
    21,324.75x = 29,428.95 × 11,895.13
  4. Step 4: Simplify right side
    21,324.75x = 350,061,186.01
  5. Step 5: Solve for x
    x = 350,061,186.01/21,324.75
  6. Step 6: Final answer
    x = 16,415.72

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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.