Home / 23,138.85-31,931.45-13,067.21

Finding the Fourth Proportional to 23,138.85, 31,931.45 and 13,067.21

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Solution

The fourth proportional to 23,138.85, 31,931.45 and 13,067.21 is: 18,032.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.85 : 31,931.45 = 13,067.21 : x
  2. Step 2: Convert to fraction form
    23,138.85/31,931.45 = 13,067.21/x
  3. Step 3: Cross multiply
    23,138.85x = 31,931.45 × 13,067.21
  4. Step 4: Simplify right side
    23,138.85x = 417,254,737.76
  5. Step 5: Solve for x
    x = 417,254,737.76/23,138.85
  6. Step 6: Final answer
    x = 18,032.65

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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.