Home / 19,988.78-27,621.15-17,327.66

Finding the Fourth Proportional to 19,988.78, 27,621.15 and 17,327.66

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Solution

The fourth proportional to 19,988.78, 27,621.15 and 17,327.66 is: 23,943.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.78 : 27,621.15 = 17,327.66 : x
  2. Step 2: Convert to fraction form
    19,988.78/27,621.15 = 17,327.66/x
  3. Step 3: Cross multiply
    19,988.78x = 27,621.15 × 17,327.66
  4. Step 4: Simplify right side
    19,988.78x = 478,609,896.01
  5. Step 5: Solve for x
    x = 478,609,896.01/19,988.78
  6. Step 6: Final answer
    x = 23,943.93

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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.