Home / 31,290.78-43,182.14-17,864.22

Finding the Fourth Proportional to 31,290.78, 43,182.14 and 17,864.22

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Solution

The fourth proportional to 31,290.78, 43,182.14 and 17,864.22 is: 24,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.78 : 43,182.14 = 17,864.22 : x
  2. Step 2: Convert to fraction form
    31,290.78/43,182.14 = 17,864.22/x
  3. Step 3: Cross multiply
    31,290.78x = 43,182.14 × 17,864.22
  4. Step 4: Simplify right side
    31,290.78x = 771,415,249.03
  5. Step 5: Solve for x
    x = 771,415,249.03/31,290.78
  6. Step 6: Final answer
    x = 24,653.12

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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.