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Finding the Fourth Proportional to 12,965.40, 17,854.60 and 11,263.13

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Solution

The fourth proportional to 12,965.40, 17,854.60 and 11,263.13 is: 15,510.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.40 : 17,854.60 = 11,263.13 : x
  2. Step 2: Convert to fraction form
    12,965.40/17,854.60 = 11,263.13/x
  3. Step 3: Cross multiply
    12,965.40x = 17,854.60 × 11,263.13
  4. Step 4: Simplify right side
    12,965.40x = 201,098,636.26
  5. Step 5: Solve for x
    x = 201,098,636.26/12,965.40
  6. Step 6: Final answer
    x = 15,510.41

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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.