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Finding the Fourth Proportional to 18,267.36, 25,209 and 9,883.86

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Solution

The fourth proportional to 18,267.36, 25,209 and 9,883.86 is: 13,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,267.36 : 25,209 = 9,883.86 : x
  2. Step 2: Convert to fraction form
    18,267.36/25,209 = 9,883.86/x
  3. Step 3: Cross multiply
    18,267.36x = 25,209 × 9,883.86
  4. Step 4: Simplify right side
    18,267.36x = 249,162,226.74
  5. Step 5: Solve for x
    x = 249,162,226.74/18,267.36
  6. Step 6: Final answer
    x = 13,639.75

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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.