Home / 38,580.78-57,875.31-12,279.37

Finding the Fourth Proportional to 38,580.78, 57,875.31 and 12,279.37

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Solution

The fourth proportional to 38,580.78, 57,875.31 and 12,279.37 is: 18,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,580.78 : 57,875.31 = 12,279.37 : x
  2. Step 2: Convert to fraction form
    38,580.78/57,875.31 = 12,279.37/x
  3. Step 3: Cross multiply
    38,580.78x = 57,875.31 × 12,279.37
  4. Step 4: Simplify right side
    38,580.78x = 710,672,345.35
  5. Step 5: Solve for x
    x = 710,672,345.35/38,580.78
  6. Step 6: Final answer
    x = 18,420.37

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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.