Home / 31,262.51-43,143.35-17,115.45

Finding the Fourth Proportional to 31,262.51, 43,143.35 and 17,115.45

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Solution

The fourth proportional to 31,262.51, 43,143.35 and 17,115.45 is: 23,619.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,262.51 : 43,143.35 = 17,115.45 : x
  2. Step 2: Convert to fraction form
    31,262.51/43,143.35 = 17,115.45/x
  3. Step 3: Cross multiply
    31,262.51x = 43,143.35 × 17,115.45
  4. Step 4: Simplify right side
    31,262.51x = 738,417,764.18
  5. Step 5: Solve for x
    x = 738,417,764.18/31,262.51
  6. Step 6: Final answer
    x = 23,619.92

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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.