Home / 39,675.09-54,752.13-21,769.77

Finding the Fourth Proportional to 39,675.09, 54,752.13 and 21,769.77

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Solution

The fourth proportional to 39,675.09, 54,752.13 and 21,769.77 is: 30,042.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,675.09 : 54,752.13 = 21,769.77 : x
  2. Step 2: Convert to fraction form
    39,675.09/54,752.13 = 21,769.77/x
  3. Step 3: Cross multiply
    39,675.09x = 54,752.13 × 21,769.77
  4. Step 4: Simplify right side
    39,675.09x = 1,191,941,277.11
  5. Step 5: Solve for x
    x = 1,191,941,277.11/39,675.09
  6. Step 6: Final answer
    x = 30,042.56

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1.5x scale

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.