Home / 39,782.09-54,898.56-21,877.14

Finding the Fourth Proportional to 39,782.09, 54,898.56 and 21,877.14

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Solution

The fourth proportional to 39,782.09, 54,898.56 and 21,877.14 is: 30,190.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.09 : 54,898.56 = 21,877.14 : x
  2. Step 2: Convert to fraction form
    39,782.09/54,898.56 = 21,877.14/x
  3. Step 3: Cross multiply
    39,782.09x = 54,898.56 × 21,877.14
  4. Step 4: Simplify right side
    39,782.09x = 1,201,023,482.92
  5. Step 5: Solve for x
    x = 1,201,023,482.92/39,782.09
  6. Step 6: Final answer
    x = 30,190.06

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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.