Home / 31,435.32-43,380.72-17,289.21

Finding the Fourth Proportional to 31,435.32, 43,380.72 and 17,289.21

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Solution

The fourth proportional to 31,435.32, 43,380.72 and 17,289.21 is: 23,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.32 : 43,380.72 = 17,289.21 : x
  2. Step 2: Convert to fraction form
    31,435.32/43,380.72 = 17,289.21/x
  3. Step 3: Cross multiply
    31,435.32x = 43,380.72 × 17,289.21
  4. Step 4: Simplify right side
    31,435.32x = 750,018,378.03
  5. Step 5: Solve for x
    x = 750,018,378.03/31,435.32
  6. Step 6: Final answer
    x = 23,859.10

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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.