Home / 15,719.62-21,693.33-8,645.98

Finding the Fourth Proportional to 15,719.62, 21,693.33 and 8,645.98

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Solution

The fourth proportional to 15,719.62, 21,693.33 and 8,645.98 is: 11,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.62 : 21,693.33 = 8,645.98 : x
  2. Step 2: Convert to fraction form
    15,719.62/21,693.33 = 8,645.98/x
  3. Step 3: Cross multiply
    15,719.62x = 21,693.33 × 8,645.98
  4. Step 4: Simplify right side
    15,719.62x = 187,560,097.31
  5. Step 5: Solve for x
    x = 187,560,097.31/15,719.62
  6. Step 6: Final answer
    x = 11,931.59

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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.