Home / 21,225.80-29,290.21-11,665.49

Finding the Fourth Proportional to 21,225.80, 29,290.21 and 11,665.49

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Solution

The fourth proportional to 21,225.80, 29,290.21 and 11,665.49 is: 16,097.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225.80 : 29,290.21 = 11,665.49 : x
  2. Step 2: Convert to fraction form
    21,225.80/29,290.21 = 11,665.49/x
  3. Step 3: Cross multiply
    21,225.80x = 29,290.21 × 11,665.49
  4. Step 4: Simplify right side
    21,225.80x = 341,684,476.24
  5. Step 5: Solve for x
    x = 341,684,476.24/21,225.80
  6. Step 6: Final answer
    x = 16,097.60

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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.