Home / 39,707.52-54,796.43-21,803.68

Finding the Fourth Proportional to 39,707.52, 54,796.43 and 21,803.68

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Solution

The fourth proportional to 39,707.52, 54,796.43 and 21,803.68 is: 30,089.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,707.52 : 54,796.43 = 21,803.68 : x
  2. Step 2: Convert to fraction form
    39,707.52/54,796.43 = 21,803.68/x
  3. Step 3: Cross multiply
    39,707.52x = 54,796.43 × 21,803.68
  4. Step 4: Simplify right side
    39,707.52x = 1,194,763,947.87
  5. Step 5: Solve for x
    x = 1,194,763,947.87/39,707.52
  6. Step 6: Final answer
    x = 30,089.11

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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.