Home / 15,665.70-21,618.25-9,292.26

Finding the Fourth Proportional to 15,665.70, 21,618.25 and 9,292.26

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Solution

The fourth proportional to 15,665.70, 21,618.25 and 9,292.26 is: 12,823.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.70 : 21,618.25 = 9,292.26 : x
  2. Step 2: Convert to fraction form
    15,665.70/21,618.25 = 9,292.26/x
  3. Step 3: Cross multiply
    15,665.70x = 21,618.25 × 9,292.26
  4. Step 4: Simplify right side
    15,665.70x = 200,882,399.75
  5. Step 5: Solve for x
    x = 200,882,399.75/15,665.70
  6. Step 6: Final answer
    x = 12,823.07

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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.