Home / 18,272.85-25,216.53-9,889.35

Finding the Fourth Proportional to 18,272.85, 25,216.53 and 9,889.35

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Solution

The fourth proportional to 18,272.85, 25,216.53 and 9,889.35 is: 13,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.85 : 25,216.53 = 9,889.35 : x
  2. Step 2: Convert to fraction form
    18,272.85/25,216.53 = 9,889.35/x
  3. Step 3: Cross multiply
    18,272.85x = 25,216.53 × 9,889.35
  4. Step 4: Simplify right side
    18,272.85x = 249,374,964.87
  5. Step 5: Solve for x
    x = 249,374,964.87/18,272.85
  6. Step 6: Final answer
    x = 13,647.30

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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.