Home / 38,420.83-57,628.01-21,728.35

Finding the Fourth Proportional to 38,420.83, 57,628.01 and 21,728.35

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Solution

The fourth proportional to 38,420.83, 57,628.01 and 21,728.35 is: 32,590.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420.83 : 57,628.01 = 21,728.35 : x
  2. Step 2: Convert to fraction form
    38,420.83/57,628.01 = 21,728.35/x
  3. Step 3: Cross multiply
    38,420.83x = 57,628.01 × 21,728.35
  4. Step 4: Simplify right side
    38,420.83x = 1,252,161,575.22
  5. Step 5: Solve for x
    x = 1,252,161,575.22/38,420.83
  6. Step 6: Final answer
    x = 32,590.69

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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.