Home / 22,749.98-31,393.70-12,540.68

Finding the Fourth Proportional to 22,749.98, 31,393.70 and 12,540.68

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Solution

The fourth proportional to 22,749.98, 31,393.70 and 12,540.68 is: 17,305.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,749.98 : 31,393.70 = 12,540.68 : x
  2. Step 2: Convert to fraction form
    22,749.98/31,393.70 = 12,540.68/x
  3. Step 3: Cross multiply
    22,749.98x = 31,393.70 × 12,540.68
  4. Step 4: Simplify right side
    22,749.98x = 393,698,345.72
  5. Step 5: Solve for x
    x = 393,698,345.72/22,749.98
  6. Step 6: Final answer
    x = 17,305.44

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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.