Home / 21,239.59-29,310.67-11,808.16

Finding the Fourth Proportional to 21,239.59, 29,310.67 and 11,808.16

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Solution

The fourth proportional to 21,239.59, 29,310.67 and 11,808.16 is: 16,295.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.59 : 29,310.67 = 11,808.16 : x
  2. Step 2: Convert to fraction form
    21,239.59/29,310.67 = 11,808.16/x
  3. Step 3: Cross multiply
    21,239.59x = 29,310.67 × 11,808.16
  4. Step 4: Simplify right side
    21,239.59x = 346,105,081.07
  5. Step 5: Solve for x
    x = 346,105,081.07/21,239.59
  6. Step 6: Final answer
    x = 16,295.28

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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.