Home / 39,742.40-54,844.16-21,837.60

Finding the Fourth Proportional to 39,742.40, 54,844.16 and 21,837.60

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Solution

The fourth proportional to 39,742.40, 54,844.16 and 21,837.60 is: 30,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.40 : 54,844.16 = 21,837.60 : x
  2. Step 2: Convert to fraction form
    39,742.40/54,844.16 = 21,837.60/x
  3. Step 3: Cross multiply
    39,742.40x = 54,844.16 × 21,837.60
  4. Step 4: Simplify right side
    39,742.40x = 1,197,664,828.42
  5. Step 5: Solve for x
    x = 1,197,664,828.42/39,742.40
  6. Step 6: Final answer
    x = 30,135.69

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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.