Home / 19,778.47-27,294.54-10,825.78

Finding the Fourth Proportional to 19,778.47, 27,294.54 and 10,825.78

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Solution

The fourth proportional to 19,778.47, 27,294.54 and 10,825.78 is: 14,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.47 : 27,294.54 = 10,825.78 : x
  2. Step 2: Convert to fraction form
    19,778.47/27,294.54 = 10,825.78/x
  3. Step 3: Cross multiply
    19,778.47x = 27,294.54 × 10,825.78
  4. Step 4: Simplify right side
    19,778.47x = 295,484,644.07
  5. Step 5: Solve for x
    x = 295,484,644.07/19,778.47
  6. Step 6: Final answer
    x = 14,939.71

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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.