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Finding the Fourth Proportional to 30,151.68, 41,603.95 and 18,207.01

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Solution

The fourth proportional to 30,151.68, 41,603.95 and 18,207.01 is: 25,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.68 : 41,603.95 = 18,207.01 : x
  2. Step 2: Convert to fraction form
    30,151.68/41,603.95 = 18,207.01/x
  3. Step 3: Cross multiply
    30,151.68x = 41,603.95 × 18,207.01
  4. Step 4: Simplify right side
    30,151.68x = 757,483,488.17
  5. Step 5: Solve for x
    x = 757,483,488.17/30,151.68
  6. Step 6: Final answer
    x = 25,122.43

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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.