Home / 15,418.64-23,138.92-13,931.48

Finding the Fourth Proportional to 15,418.64, 23,138.92 and 13,931.48

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Solution

The fourth proportional to 15,418.64, 23,138.92 and 13,931.48 is: 20,907.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.64 : 23,138.92 = 13,931.48 : x
  2. Step 2: Convert to fraction form
    15,418.64/23,138.92 = 13,931.48/x
  3. Step 3: Cross multiply
    15,418.64x = 23,138.92 × 13,931.48
  4. Step 4: Simplify right side
    15,418.64x = 322,359,401.20
  5. Step 5: Solve for x
    x = 322,359,401.20/15,418.64
  6. Step 6: Final answer
    x = 20,907.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.