Home / 18,720.09-25,952.01-17,721.36

Finding the Fourth Proportional to 18,720.09, 25,952.01 and 17,721.36

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Solution

The fourth proportional to 18,720.09, 25,952.01 and 17,721.36 is: 24,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.09 : 25,952.01 = 17,721.36 : x
  2. Step 2: Convert to fraction form
    18,720.09/25,952.01 = 17,721.36/x
  3. Step 3: Cross multiply
    18,720.09x = 25,952.01 × 17,721.36
  4. Step 4: Simplify right side
    18,720.09x = 459,904,911.93
  5. Step 5: Solve for x
    x = 459,904,911.93/18,720.09
  6. Step 6: Final answer
    x = 24,567.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.