Home / 31,399.19-43,342.25-20,792.24

Finding the Fourth Proportional to 31,399.19, 43,342.25 and 20,792.24

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Solution

The fourth proportional to 31,399.19, 43,342.25 and 20,792.24 is: 28,700.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,399.19 : 43,342.25 = 20,792.24 : x
  2. Step 2: Convert to fraction form
    31,399.19/43,342.25 = 20,792.24/x
  3. Step 3: Cross multiply
    31,399.19x = 43,342.25 × 20,792.24
  4. Step 4: Simplify right side
    31,399.19x = 901,182,464.14
  5. Step 5: Solve for x
    x = 901,182,464.14/31,399.19
  6. Step 6: Final answer
    x = 28,700.82

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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.