Home / 31,288.93-43,178.76-17,142.28

Finding the Fourth Proportional to 31,288.93, 43,178.76 and 17,142.28

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Solution

The fourth proportional to 31,288.93, 43,178.76 and 17,142.28 is: 23,656.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,288.93 : 43,178.76 = 17,142.28 : x
  2. Step 2: Convert to fraction form
    31,288.93/43,178.76 = 17,142.28/x
  3. Step 3: Cross multiply
    31,288.93x = 43,178.76 × 17,142.28
  4. Step 4: Simplify right side
    31,288.93x = 740,182,393.97
  5. Step 5: Solve for x
    x = 740,182,393.97/31,288.93
  6. Step 6: Final answer
    x = 23,656.37

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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.