Home / 15,738.89-21,723.36-9,775.06

Finding the Fourth Proportional to 15,738.89, 21,723.36 and 9,775.06

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Solution

The fourth proportional to 15,738.89, 21,723.36 and 9,775.06 is: 13,491.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.89 : 21,723.36 = 9,775.06 : x
  2. Step 2: Convert to fraction form
    15,738.89/21,723.36 = 9,775.06/x
  3. Step 3: Cross multiply
    15,738.89x = 21,723.36 × 9,775.06
  4. Step 4: Simplify right side
    15,738.89x = 212,347,093.09
  5. Step 5: Solve for x
    x = 212,347,093.09/15,738.89
  6. Step 6: Final answer
    x = 13,491.88

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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.