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Finding the Fourth Proportional to 12,487.77, 17,235.54 and 8,017.17

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Solution

The fourth proportional to 12,487.77, 17,235.54 and 8,017.17 is: 11,065.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.77 : 17,235.54 = 8,017.17 : x
  2. Step 2: Convert to fraction form
    12,487.77/17,235.54 = 8,017.17/x
  3. Step 3: Cross multiply
    12,487.77x = 17,235.54 × 8,017.17
  4. Step 4: Simplify right side
    12,487.77x = 138,180,254.22
  5. Step 5: Solve for x
    x = 138,180,254.22/12,487.77
  6. Step 6: Final answer
    x = 11,065.25

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Double scale
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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.