Home / 39,047.20-53,884.50-21,142.06

Finding the Fourth Proportional to 39,047.20, 53,884.50 and 21,142.06

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Solution

The fourth proportional to 39,047.20, 53,884.50 and 21,142.06 is: 29,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,047.20 : 53,884.50 = 21,142.06 : x
  2. Step 2: Convert to fraction form
    39,047.20/53,884.50 = 21,142.06/x
  3. Step 3: Cross multiply
    39,047.20x = 53,884.50 × 21,142.06
  4. Step 4: Simplify right side
    39,047.20x = 1,139,229,332.07
  5. Step 5: Solve for x
    x = 1,139,229,332.07/39,047.20
  6. Step 6: Final answer
    x = 29,175.70

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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.