Home / 31,335.30-43,221.33-21,260.52

Finding the Fourth Proportional to 31,335.30, 43,221.33 and 21,260.52

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Solution

The fourth proportional to 31,335.30, 43,221.33 and 21,260.52 is: 29,325.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,335.30 : 43,221.33 = 21,260.52 : x
  2. Step 2: Convert to fraction form
    31,335.30/43,221.33 = 21,260.52/x
  3. Step 3: Cross multiply
    31,335.30x = 43,221.33 × 21,260.52
  4. Step 4: Simplify right side
    31,335.30x = 918,907,950.89
  5. Step 5: Solve for x
    x = 918,907,950.89/31,335.30
  6. Step 6: Final answer
    x = 29,325.01

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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.