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Finding the Fourth Proportional to 30,595.92, 42,220.92 and 18,021.36

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Solution

The fourth proportional to 30,595.92, 42,220.92 and 18,021.36 is: 24,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,595.92 : 42,220.92 = 18,021.36 : x
  2. Step 2: Convert to fraction form
    30,595.92/42,220.92 = 18,021.36/x
  3. Step 3: Cross multiply
    30,595.92x = 42,220.92 × 18,021.36
  4. Step 4: Simplify right side
    30,595.92x = 760,878,398.85
  5. Step 5: Solve for x
    x = 760,878,398.85/30,595.92
  6. Step 6: Final answer
    x = 24,868.62

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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.