Home / 38,587.79-57,906.40-20,830.82

Finding the Fourth Proportional to 38,587.79, 57,906.40 and 20,830.82

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Solution

The fourth proportional to 38,587.79, 57,906.40 and 20,830.82 is: 31,259.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,587.79 : 57,906.40 = 20,830.82 : x
  2. Step 2: Convert to fraction form
    38,587.79/57,906.40 = 20,830.82/x
  3. Step 3: Cross multiply
    38,587.79x = 57,906.40 × 20,830.82
  4. Step 4: Simplify right side
    38,587.79x = 1,206,237,657.51
  5. Step 5: Solve for x
    x = 1,206,237,657.51/38,587.79
  6. Step 6: Final answer
    x = 31,259.56

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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.