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Finding the Fourth Proportional to 33,135.50, 45,726.99 and 18,231.50

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Solution

The fourth proportional to 33,135.50, 45,726.99 and 18,231.50 is: 25,159.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,135.50 : 45,726.99 = 18,231.50 : x
  2. Step 2: Convert to fraction form
    33,135.50/45,726.99 = 18,231.50/x
  3. Step 3: Cross multiply
    33,135.50x = 45,726.99 × 18,231.50
  4. Step 4: Simplify right side
    33,135.50x = 833,671,618.19
  5. Step 5: Solve for x
    x = 833,671,618.19/33,135.50
  6. Step 6: Final answer
    x = 25,159.47

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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.