Home / 32,780.88-45,223.92-21,453.12

Finding the Fourth Proportional to 32,780.88, 45,223.92 and 21,453.12

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Solution

The fourth proportional to 32,780.88, 45,223.92 and 21,453.12 is: 29,596.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,780.88 : 45,223.92 = 21,453.12 : x
  2. Step 2: Convert to fraction form
    32,780.88/45,223.92 = 21,453.12/x
  3. Step 3: Cross multiply
    32,780.88x = 45,223.92 × 21,453.12
  4. Step 4: Simplify right side
    32,780.88x = 970,194,182.63
  5. Step 5: Solve for x
    x = 970,194,182.63/32,780.88
  6. Step 6: Final answer
    x = 29,596.34

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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.