Home / 21,237.09-29,306.12-11,805.45

Finding the Fourth Proportional to 21,237.09, 29,306.12 and 11,805.45

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Solution

The fourth proportional to 21,237.09, 29,306.12 and 11,805.45 is: 16,290.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.09 : 29,306.12 = 11,805.45 : x
  2. Step 2: Convert to fraction form
    21,237.09/29,306.12 = 11,805.45/x
  3. Step 3: Cross multiply
    21,237.09x = 29,306.12 × 11,805.45
  4. Step 4: Simplify right side
    21,237.09x = 345,971,875.33
  5. Step 5: Solve for x
    x = 345,971,875.33/21,237.09
  6. Step 6: Final answer
    x = 16,290.93

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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.