Home / 39,615.04-54,669.36-21,709.90

Finding the Fourth Proportional to 39,615.04, 54,669.36 and 21,709.90

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Solution

The fourth proportional to 39,615.04, 54,669.36 and 21,709.90 is: 29,959.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,615.04 : 54,669.36 = 21,709.90 : x
  2. Step 2: Convert to fraction form
    39,615.04/54,669.36 = 21,709.90/x
  3. Step 3: Cross multiply
    39,615.04x = 54,669.36 × 21,709.90
  4. Step 4: Simplify right side
    39,615.04x = 1,186,866,338.66
  5. Step 5: Solve for x
    x = 1,186,866,338.66/39,615.04
  6. Step 6: Final answer
    x = 29,959.99

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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.