Home / 31,415.64-43,356.06-17,991.12

Finding the Fourth Proportional to 31,415.64, 43,356.06 and 17,991.12

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Solution

The fourth proportional to 31,415.64, 43,356.06 and 17,991.12 is: 24,829.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.64 : 43,356.06 = 17,991.12 : x
  2. Step 2: Convert to fraction form
    31,415.64/43,356.06 = 17,991.12/x
  3. Step 3: Cross multiply
    31,415.64x = 43,356.06 × 17,991.12
  4. Step 4: Simplify right side
    31,415.64x = 780,024,078.19
  5. Step 5: Solve for x
    x = 780,024,078.19/31,415.64
  6. Step 6: Final answer
    x = 24,829.16

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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.