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Finding the Fourth Proportional to 12,570.79, 17,347.22 and 6,982.15

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Solution

The fourth proportional to 12,570.79, 17,347.22 and 6,982.15 is: 9,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.79 : 17,347.22 = 6,982.15 : x
  2. Step 2: Convert to fraction form
    12,570.79/17,347.22 = 6,982.15/x
  3. Step 3: Cross multiply
    12,570.79x = 17,347.22 × 6,982.15
  4. Step 4: Simplify right side
    12,570.79x = 121,120,857.21
  5. Step 5: Solve for x
    x = 121,120,857.21/12,570.79
  6. Step 6: Final answer
    x = 9,635.10

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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.