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Finding the Fourth Proportional to 30,149.30, 41,603.07 and 16,720.32

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Solution

The fourth proportional to 30,149.30, 41,603.07 and 16,720.32 is: 23,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,149.30 : 41,603.07 = 16,720.32 : x
  2. Step 2: Convert to fraction form
    30,149.30/41,603.07 = 16,720.32/x
  3. Step 3: Cross multiply
    30,149.30x = 41,603.07 × 16,720.32
  4. Step 4: Simplify right side
    30,149.30x = 695,616,643.38
  5. Step 5: Solve for x
    x = 695,616,643.38/30,149.30
  6. Step 6: Final answer
    x = 23,072.40

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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.