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Finding the Fourth Proportional to 18,263.34, 25,203.36 and 9,879.84

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Solution

The fourth proportional to 18,263.34, 25,203.36 and 9,879.84 is: 13,634.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,263.34 : 25,203.36 = 9,879.84 : x
  2. Step 2: Convert to fraction form
    18,263.34/25,203.36 = 9,879.84/x
  3. Step 3: Cross multiply
    18,263.34x = 25,203.36 × 9,879.84
  4. Step 4: Simplify right side
    18,263.34x = 249,005,164.26
  5. Step 5: Solve for x
    x = 249,005,164.26/18,263.34
  6. Step 6: Final answer
    x = 13,634.15

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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.