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Finding the Fourth Proportional to 12,908.18, 17,812.76 and 7,603.22

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Solution

The fourth proportional to 12,908.18, 17,812.76 and 7,603.22 is: 10,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.18 : 17,812.76 = 7,603.22 : x
  2. Step 2: Convert to fraction form
    12,908.18/17,812.76 = 7,603.22/x
  3. Step 3: Cross multiply
    12,908.18x = 17,812.76 × 7,603.22
  4. Step 4: Simplify right side
    12,908.18x = 135,434,333.09
  5. Step 5: Solve for x
    x = 135,434,333.09/12,908.18
  6. Step 6: Final answer
    x = 10,492.13

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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.