Home / 33,145.52-45,756.45-21,215.77

Finding the Fourth Proportional to 33,145.52, 45,756.45 and 21,215.77

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Solution

The fourth proportional to 33,145.52, 45,756.45 and 21,215.77 is: 29,287.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,145.52 : 45,756.45 = 21,215.77 : x
  2. Step 2: Convert to fraction form
    33,145.52/45,756.45 = 21,215.77/x
  3. Step 3: Cross multiply
    33,145.52x = 45,756.45 × 21,215.77
  4. Step 4: Simplify right side
    33,145.52x = 970,758,204.83
  5. Step 5: Solve for x
    x = 970,758,204.83/33,145.52
  6. Step 6: Final answer
    x = 29,287.77

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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.