Home / 38,782.55-53,521.19-21,789.82

Finding the Fourth Proportional to 38,782.55, 53,521.19 and 21,789.82

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Solution

The fourth proportional to 38,782.55, 53,521.19 and 21,789.82 is: 30,070.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.55 : 53,521.19 = 21,789.82 : x
  2. Step 2: Convert to fraction form
    38,782.55/53,521.19 = 21,789.82/x
  3. Step 3: Cross multiply
    38,782.55x = 53,521.19 × 21,789.82
  4. Step 4: Simplify right side
    38,782.55x = 1,166,216,719.73
  5. Step 5: Solve for x
    x = 1,166,216,719.73/38,782.55
  6. Step 6: Final answer
    x = 30,070.66

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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.