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Finding the Fourth Proportional to 12,859.61, 17,746.02 and 7,270.61

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Solution

The fourth proportional to 12,859.61, 17,746.02 and 7,270.61 is: 10,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.61 : 17,746.02 = 7,270.61 : x
  2. Step 2: Convert to fraction form
    12,859.61/17,746.02 = 7,270.61/x
  3. Step 3: Cross multiply
    12,859.61x = 17,746.02 × 7,270.61
  4. Step 4: Simplify right side
    12,859.61x = 129,024,301.74
  5. Step 5: Solve for x
    x = 129,024,301.74/12,859.61
  6. Step 6: Final answer
    x = 10,033.30

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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.