Home / 21,306.79-29,403.57-11,747.02

Finding the Fourth Proportional to 21,306.79, 29,403.57 and 11,747.02

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Solution

The fourth proportional to 21,306.79, 29,403.57 and 11,747.02 is: 16,211.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.79 : 29,403.57 = 11,747.02 : x
  2. Step 2: Convert to fraction form
    21,306.79/29,403.57 = 11,747.02/x
  3. Step 3: Cross multiply
    21,306.79x = 29,403.57 × 11,747.02
  4. Step 4: Simplify right side
    21,306.79x = 345,404,370.94
  5. Step 5: Solve for x
    x = 345,404,370.94/21,306.79
  6. Step 6: Final answer
    x = 16,211.00

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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.