Home / 18,272.82-25,216.47-9,889.32

Finding the Fourth Proportional to 18,272.82, 25,216.47 and 9,889.32

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Solution

The fourth proportional to 18,272.82, 25,216.47 and 9,889.32 is: 13,647.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.82 : 25,216.47 = 9,889.32 : x
  2. Step 2: Convert to fraction form
    18,272.82/25,216.47 = 9,889.32/x
  3. Step 3: Cross multiply
    18,272.82x = 25,216.47 × 9,889.32
  4. Step 4: Simplify right side
    18,272.82x = 249,373,741.10
  5. Step 5: Solve for x
    x = 249,373,741.10/18,272.82
  6. Step 6: Final answer
    x = 13,647.25

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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.