Home / 39,121.98-53,917.83-28,494.78

Finding the Fourth Proportional to 39,121.98, 53,917.83 and 28,494.78

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Solution

The fourth proportional to 39,121.98, 53,917.83 and 28,494.78 is: 39,271.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,121.98 : 53,917.83 = 28,494.78 : x
  2. Step 2: Convert to fraction form
    39,121.98/53,917.83 = 28,494.78/x
  3. Step 3: Cross multiply
    39,121.98x = 53,917.83 × 28,494.78
  4. Step 4: Simplify right side
    39,121.98x = 1,536,376,703.93
  5. Step 5: Solve for x
    x = 1,536,376,703.93/39,121.98
  6. Step 6: Final answer
    x = 39,271.45

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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.