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Finding the Fourth Proportional to 19,992.52, 30,039.81 and 15,108.22

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Solution

The fourth proportional to 19,992.52, 30,039.81 and 15,108.22 is: 22,700.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.52 : 30,039.81 = 15,108.22 : x
  2. Step 2: Convert to fraction form
    19,992.52/30,039.81 = 15,108.22/x
  3. Step 3: Cross multiply
    19,992.52x = 30,039.81 × 15,108.22
  4. Step 4: Simplify right side
    19,992.52x = 453,848,058.24
  5. Step 5: Solve for x
    x = 453,848,058.24/19,992.52
  6. Step 6: Final answer
    x = 22,700.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.