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Finding the Fourth Proportional to 21,658.04, 29,888.09 and 11,722.04

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Solution

The fourth proportional to 21,658.04, 29,888.09 and 11,722.04 is: 16,176.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.04 : 29,888.09 = 11,722.04 : x
  2. Step 2: Convert to fraction form
    21,658.04/29,888.09 = 11,722.04/x
  3. Step 3: Cross multiply
    21,658.04x = 29,888.09 × 11,722.04
  4. Step 4: Simplify right side
    21,658.04x = 350,349,178.45
  5. Step 5: Solve for x
    x = 350,349,178.45/21,658.04
  6. Step 6: Final answer
    x = 16,176.41

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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.