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Finding the Fourth Proportional to 33,102.99, 45,681.12 and 18,954.90

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Solution

The fourth proportional to 33,102.99, 45,681.12 and 18,954.90 is: 26,157.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,102.99 : 45,681.12 = 18,954.90 : x
  2. Step 2: Convert to fraction form
    33,102.99/45,681.12 = 18,954.90/x
  3. Step 3: Cross multiply
    33,102.99x = 45,681.12 × 18,954.90
  4. Step 4: Simplify right side
    33,102.99x = 865,881,061.49
  5. Step 5: Solve for x
    x = 865,881,061.49/33,102.99
  6. Step 6: Final answer
    x = 26,157.19

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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.