Home / 39,410.70-54,386.49-21,505.32

Finding the Fourth Proportional to 39,410.70, 54,386.49 and 21,505.32

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Solution

The fourth proportional to 39,410.70, 54,386.49 and 21,505.32 is: 29,677.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,410.70 : 54,386.49 = 21,505.32 : x
  2. Step 2: Convert to fraction form
    39,410.70/54,386.49 = 21,505.32/x
  3. Step 3: Cross multiply
    39,410.70x = 54,386.49 × 21,505.32
  4. Step 4: Simplify right side
    39,410.70x = 1,169,598,871.13
  5. Step 5: Solve for x
    x = 1,169,598,871.13/39,410.70
  6. Step 6: Final answer
    x = 29,677.19

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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.