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Finding the Fourth Proportional to 18,264.60, 25,205.16 and 9,881.08

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Solution

The fourth proportional to 18,264.60, 25,205.16 and 9,881.08 is: 13,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,264.60 : 25,205.16 = 9,881.08 : x
  2. Step 2: Convert to fraction form
    18,264.60/25,205.16 = 9,881.08/x
  3. Step 3: Cross multiply
    18,264.60x = 25,205.16 × 9,881.08
  4. Step 4: Simplify right side
    18,264.60x = 249,054,202.37
  5. Step 5: Solve for x
    x = 249,054,202.37/18,264.60
  6. Step 6: Final answer
    x = 13,635.90

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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.