Home / 39,612.78-54,667.14-22,619.79

Finding the Fourth Proportional to 39,612.78, 54,667.14 and 22,619.79

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Solution

The fourth proportional to 39,612.78, 54,667.14 and 22,619.79 is: 31,216.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,612.78 : 54,667.14 = 22,619.79 : x
  2. Step 2: Convert to fraction form
    39,612.78/54,667.14 = 22,619.79/x
  3. Step 3: Cross multiply
    39,612.78x = 54,667.14 × 22,619.79
  4. Step 4: Simplify right side
    39,612.78x = 1,236,558,840.27
  5. Step 5: Solve for x
    x = 1,236,558,840.27/39,612.78
  6. Step 6: Final answer
    x = 31,216.16

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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.