Home / 27,020.78-37,282.10-15,840.62

Finding the Fourth Proportional to 27,020.78, 37,282.10 and 15,840.62

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Solution

The fourth proportional to 27,020.78, 37,282.10 and 15,840.62 is: 21,856.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,020.78 : 37,282.10 = 15,840.62 : x
  2. Step 2: Convert to fraction form
    27,020.78/37,282.10 = 15,840.62/x
  3. Step 3: Cross multiply
    27,020.78x = 37,282.10 × 15,840.62
  4. Step 4: Simplify right side
    27,020.78x = 590,571,578.90
  5. Step 5: Solve for x
    x = 590,571,578.90/27,020.78
  6. Step 6: Final answer
    x = 21,856.20

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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.