Home / 39,035.70-53,869.10-21,131.01

Finding the Fourth Proportional to 39,035.70, 53,869.10 and 21,131.01

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Solution

The fourth proportional to 39,035.70, 53,869.10 and 21,131.01 is: 29,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,035.70 : 53,869.10 = 21,131.01 : x
  2. Step 2: Convert to fraction form
    39,035.70/53,869.10 = 21,131.01/x
  3. Step 3: Cross multiply
    39,035.70x = 53,869.10 × 21,131.01
  4. Step 4: Simplify right side
    39,035.70x = 1,138,308,385.14
  5. Step 5: Solve for x
    x = 1,138,308,385.14/39,035.70
  6. Step 6: Final answer
    x = 29,160.70

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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.