Home / 39,811.68-54,935.55-21,905.01

Finding the Fourth Proportional to 39,811.68, 54,935.55 and 21,905.01

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Solution

The fourth proportional to 39,811.68, 54,935.55 and 21,905.01 is: 30,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,811.68 : 54,935.55 = 21,905.01 : x
  2. Step 2: Convert to fraction form
    39,811.68/54,935.55 = 21,905.01/x
  3. Step 3: Cross multiply
    39,811.68x = 54,935.55 × 21,905.01
  4. Step 4: Simplify right side
    39,811.68x = 1,203,363,772.11
  5. Step 5: Solve for x
    x = 1,203,363,772.11/39,811.68
  6. Step 6: Final answer
    x = 30,226.40

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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.