Home / 31,288.35-43,178.49-17,140.29

Finding the Fourth Proportional to 31,288.35, 43,178.49 and 17,140.29

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Solution

The fourth proportional to 31,288.35, 43,178.49 and 17,140.29 is: 23,653.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,288.35 : 43,178.49 = 17,140.29 : x
  2. Step 2: Convert to fraction form
    31,288.35/43,178.49 = 17,140.29/x
  3. Step 3: Cross multiply
    31,288.35x = 43,178.49 × 17,140.29
  4. Step 4: Simplify right side
    31,288.35x = 740,091,840.36
  5. Step 5: Solve for x
    x = 740,091,840.36/31,288.35
  6. Step 6: Final answer
    x = 23,653.91

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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.