Home / 21,397.16-29,525.49-11,836.40

Finding the Fourth Proportional to 21,397.16, 29,525.49 and 11,836.40

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Solution

The fourth proportional to 21,397.16, 29,525.49 and 11,836.40 is: 16,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.16 : 29,525.49 = 11,836.40 : x
  2. Step 2: Convert to fraction form
    21,397.16/29,525.49 = 11,836.40/x
  3. Step 3: Cross multiply
    21,397.16x = 29,525.49 × 11,836.40
  4. Step 4: Simplify right side
    21,397.16x = 349,475,578.04
  5. Step 5: Solve for x
    x = 349,475,578.04/21,397.16
  6. Step 6: Final answer
    x = 16,332.80

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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.