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Finding the Fourth Proportional to 18,366.40, 25,347 and 11,295.28

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Solution

The fourth proportional to 18,366.40, 25,347 and 11,295.28 is: 15,588.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,366.40 : 25,347 = 11,295.28 : x
  2. Step 2: Convert to fraction form
    18,366.40/25,347 = 11,295.28/x
  3. Step 3: Cross multiply
    18,366.40x = 25,347 × 11,295.28
  4. Step 4: Simplify right side
    18,366.40x = 286,301,462.16
  5. Step 5: Solve for x
    x = 286,301,462.16/18,366.40
  6. Step 6: Final answer
    x = 15,588.33

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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.