Home / 39,939-55,113.96-22,931.26

Finding the Fourth Proportional to 39,939, 55,113.96 and 22,931.26

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Solution

The fourth proportional to 39,939, 55,113.96 and 22,931.26 is: 31,644.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,939 : 55,113.96 = 22,931.26 : x
  2. Step 2: Convert to fraction form
    39,939/55,113.96 = 22,931.26/x
  3. Step 3: Cross multiply
    39,939x = 55,113.96 × 22,931.26
  4. Step 4: Simplify right side
    39,939x = 1,263,832,546.39
  5. Step 5: Solve for x
    x = 1,263,832,546.39/39,939
  6. Step 6: Final answer
    x = 31,644.07

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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.