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Finding the Fourth Proportional to 12,570.74, 17,346.78 and 6,904.38

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Solution

The fourth proportional to 12,570.74, 17,346.78 and 6,904.38 is: 9,527.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.74 : 17,346.78 = 6,904.38 : x
  2. Step 2: Convert to fraction form
    12,570.74/17,346.78 = 6,904.38/x
  3. Step 3: Cross multiply
    12,570.74x = 17,346.78 × 6,904.38
  4. Step 4: Simplify right side
    12,570.74x = 119,768,760.90
  5. Step 5: Solve for x
    x = 119,768,760.90/12,570.74
  6. Step 6: Final answer
    x = 9,527.59

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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.