Home / 18,272.55-25,216.11-9,889.05

Finding the Fourth Proportional to 18,272.55, 25,216.11 and 9,889.05

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Solution

The fourth proportional to 18,272.55, 25,216.11 and 9,889.05 is: 13,646.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.55 : 25,216.11 = 9,889.05 : x
  2. Step 2: Convert to fraction form
    18,272.55/25,216.11 = 9,889.05/x
  3. Step 3: Cross multiply
    18,272.55x = 25,216.11 × 9,889.05
  4. Step 4: Simplify right side
    18,272.55x = 249,363,372.60
  5. Step 5: Solve for x
    x = 249,363,372.60/18,272.55
  6. Step 6: Final answer
    x = 13,646.88

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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.