Home / 39,099.12-53,956.56-21,193.68

Finding the Fourth Proportional to 39,099.12, 53,956.56 and 21,193.68

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Solution

The fourth proportional to 39,099.12, 53,956.56 and 21,193.68 is: 29,247.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,099.12 : 53,956.56 = 21,193.68 : x
  2. Step 2: Convert to fraction form
    39,099.12/53,956.56 = 21,193.68/x
  3. Step 3: Cross multiply
    39,099.12x = 53,956.56 × 21,193.68
  4. Step 4: Simplify right side
    39,099.12x = 1,143,538,066.54
  5. Step 5: Solve for x
    x = 1,143,538,066.54/39,099.12
  6. Step 6: Final answer
    x = 29,247.16

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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.