Home / 21,001.56-28,982.82-11,570.46

Finding the Fourth Proportional to 21,001.56, 28,982.82 and 11,570.46

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Solution

The fourth proportional to 21,001.56, 28,982.82 and 11,570.46 is: 15,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.56 : 28,982.82 = 11,570.46 : x
  2. Step 2: Convert to fraction form
    21,001.56/28,982.82 = 11,570.46/x
  3. Step 3: Cross multiply
    21,001.56x = 28,982.82 × 11,570.46
  4. Step 4: Simplify right side
    21,001.56x = 335,344,559.50
  5. Step 5: Solve for x
    x = 335,344,559.50/21,001.56
  6. Step 6: Final answer
    x = 15,967.60

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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.