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Finding the Fourth Proportional to 18,263.81, 25,204.16 and 9,880.31

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Solution

The fourth proportional to 18,263.81, 25,204.16 and 9,880.31 is: 13,634.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,263.81 : 25,204.16 = 9,880.31 : x
  2. Step 2: Convert to fraction form
    18,263.81/25,204.16 = 9,880.31/x
  3. Step 3: Cross multiply
    18,263.81x = 25,204.16 × 9,880.31
  4. Step 4: Simplify right side
    18,263.81x = 249,025,001.80
  5. Step 5: Solve for x
    x = 249,025,001.80/18,263.81
  6. Step 6: Final answer
    x = 13,634.89

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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.