Home / 38,790.78-58,211.69-21,272.91

Finding the Fourth Proportional to 38,790.78, 58,211.69 and 21,272.91

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Solution

The fourth proportional to 38,790.78, 58,211.69 and 21,272.91 is: 31,923.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,790.78 : 58,211.69 = 21,272.91 : x
  2. Step 2: Convert to fraction form
    38,790.78/58,211.69 = 21,272.91/x
  3. Step 3: Cross multiply
    38,790.78x = 58,211.69 × 21,272.91
  4. Step 4: Simplify right side
    38,790.78x = 1,238,331,935.95
  5. Step 5: Solve for x
    x = 1,238,331,935.95/38,790.78
  6. Step 6: Final answer
    x = 31,923.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.