Home / 38,782.52-53,516.90-21,781.34

Finding the Fourth Proportional to 38,782.52, 53,516.90 and 21,781.34

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Solution

The fourth proportional to 38,782.52, 53,516.90 and 21,781.34 is: 30,056.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.52 : 53,516.90 = 21,781.34 : x
  2. Step 2: Convert to fraction form
    38,782.52/53,516.90 = 21,781.34/x
  3. Step 3: Cross multiply
    38,782.52x = 53,516.90 × 21,781.34
  4. Step 4: Simplify right side
    38,782.52x = 1,165,669,794.65
  5. Step 5: Solve for x
    x = 1,165,669,794.65/38,782.52
  6. Step 6: Final answer
    x = 30,056.58

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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.