Home / 31,607.09-43,619.03-18,178.32

Finding the Fourth Proportional to 31,607.09, 43,619.03 and 18,178.32

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Solution

The fourth proportional to 31,607.09, 43,619.03 and 18,178.32 is: 25,086.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,607.09 : 43,619.03 = 18,178.32 : x
  2. Step 2: Convert to fraction form
    31,607.09/43,619.03 = 18,178.32/x
  3. Step 3: Cross multiply
    31,607.09x = 43,619.03 × 18,178.32
  4. Step 4: Simplify right side
    31,607.09x = 792,920,877.40
  5. Step 5: Solve for x
    x = 792,920,877.40/31,607.09
  6. Step 6: Final answer
    x = 25,086.81

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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.