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Finding the Fourth Proportional to 12,571.56, 17,341.02 and 7,854.93

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Solution

The fourth proportional to 12,571.56, 17,341.02 and 7,854.93 is: 10,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.56 : 17,341.02 = 7,854.93 : x
  2. Step 2: Convert to fraction form
    12,571.56/17,341.02 = 7,854.93/x
  3. Step 3: Cross multiply
    12,571.56x = 17,341.02 × 7,854.93
  4. Step 4: Simplify right side
    12,571.56x = 136,212,498.23
  5. Step 5: Solve for x
    x = 136,212,498.23/12,571.56
  6. Step 6: Final answer
    x = 10,834.97

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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.