Home / 19,673.89-27,149.61-10,721.47

Finding the Fourth Proportional to 19,673.89, 27,149.61 and 10,721.47

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Solution

The fourth proportional to 19,673.89, 27,149.61 and 10,721.47 is: 14,795.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,673.89 : 27,149.61 = 10,721.47 : x
  2. Step 2: Convert to fraction form
    19,673.89/27,149.61 = 10,721.47/x
  3. Step 3: Cross multiply
    19,673.89x = 27,149.61 × 10,721.47
  4. Step 4: Simplify right side
    19,673.89x = 291,083,729.13
  5. Step 5: Solve for x
    x = 291,083,729.13/19,673.89
  6. Step 6: Final answer
    x = 14,795.43

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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.