Home / 31,299.48-43,169.67-21,739.35

Finding the Fourth Proportional to 31,299.48, 43,169.67 and 21,739.35

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Solution

The fourth proportional to 31,299.48, 43,169.67 and 21,739.35 is: 29,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,299.48 : 43,169.67 = 21,739.35 : x
  2. Step 2: Convert to fraction form
    31,299.48/43,169.67 = 21,739.35/x
  3. Step 3: Cross multiply
    31,299.48x = 43,169.67 × 21,739.35
  4. Step 4: Simplify right side
    31,299.48x = 938,480,565.51
  5. Step 5: Solve for x
    x = 938,480,565.51/31,299.48
  6. Step 6: Final answer
    x = 29,983.90

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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.