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Finding the Fourth Proportional to 12,513.35, 17,265.35 and 7,666.72

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Solution

The fourth proportional to 12,513.35, 17,265.35 and 7,666.72 is: 10,578.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.35 : 17,265.35 = 7,666.72 : x
  2. Step 2: Convert to fraction form
    12,513.35/17,265.35 = 7,666.72/x
  3. Step 3: Cross multiply
    12,513.35x = 17,265.35 × 7,666.72
  4. Step 4: Simplify right side
    12,513.35x = 132,368,580.16
  5. Step 5: Solve for x
    x = 132,368,580.16/12,513.35
  6. Step 6: Final answer
    x = 10,578.19

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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.