Home / 21,765.16-30,025.38-13,367.08

Finding the Fourth Proportional to 21,765.16, 30,025.38 and 13,367.08

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Solution

The fourth proportional to 21,765.16, 30,025.38 and 13,367.08 is: 18,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.16 : 30,025.38 = 13,367.08 : x
  2. Step 2: Convert to fraction form
    21,765.16/30,025.38 = 13,367.08/x
  3. Step 3: Cross multiply
    21,765.16x = 30,025.38 × 13,367.08
  4. Step 4: Simplify right side
    21,765.16x = 401,351,656.49
  5. Step 5: Solve for x
    x = 401,351,656.49/21,765.16
  6. Step 6: Final answer
    x = 18,440.10

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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.