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Finding the Fourth Proportional to 18,263.80, 25,204.02 and 9,880.30

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Solution

The fourth proportional to 18,263.80, 25,204.02 and 9,880.30 is: 13,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,263.80 : 25,204.02 = 9,880.30 : x
  2. Step 2: Convert to fraction form
    18,263.80/25,204.02 = 9,880.30/x
  3. Step 3: Cross multiply
    18,263.80x = 25,204.02 × 9,880.30
  4. Step 4: Simplify right side
    18,263.80x = 249,023,278.81
  5. Step 5: Solve for x
    x = 249,023,278.81/18,263.80
  6. Step 6: Final answer
    x = 13,634.80

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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.