Home / 28,791.06-39,709.08-18,722.76

Finding the Fourth Proportional to 28,791.06, 39,709.08 and 18,722.76

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Solution

The fourth proportional to 28,791.06, 39,709.08 and 18,722.76 is: 25,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.06 : 39,709.08 = 18,722.76 : x
  2. Step 2: Convert to fraction form
    28,791.06/39,709.08 = 18,722.76/x
  3. Step 3: Cross multiply
    28,791.06x = 39,709.08 × 18,722.76
  4. Step 4: Simplify right side
    28,791.06x = 743,463,574.66
  5. Step 5: Solve for x
    x = 743,463,574.66/28,791.06
  6. Step 6: Final answer
    x = 25,822.72

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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.