Home / 39,406.05-54,382.55-21,501.36

Finding the Fourth Proportional to 39,406.05, 54,382.55 and 21,501.36

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Solution

The fourth proportional to 39,406.05, 54,382.55 and 21,501.36 is: 29,673.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.05 : 54,382.55 = 21,501.36 : x
  2. Step 2: Convert to fraction form
    39,406.05/54,382.55 = 21,501.36/x
  3. Step 3: Cross multiply
    39,406.05x = 54,382.55 × 21,501.36
  4. Step 4: Simplify right side
    39,406.05x = 1,169,298,677.76
  5. Step 5: Solve for x
    x = 1,169,298,677.76/39,406.05
  6. Step 6: Final answer
    x = 29,673.08

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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.