Home / 38,955.48-58,421.07-12,654.78

Finding the Fourth Proportional to 38,955.48, 58,421.07 and 12,654.78

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Solution

The fourth proportional to 38,955.48, 58,421.07 and 12,654.78 is: 18,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,955.48 : 58,421.07 = 12,654.78 : x
  2. Step 2: Convert to fraction form
    38,955.48/58,421.07 = 12,654.78/x
  3. Step 3: Cross multiply
    38,955.48x = 58,421.07 × 12,654.78
  4. Step 4: Simplify right side
    38,955.48x = 739,305,788.21
  5. Step 5: Solve for x
    x = 739,305,788.21/38,955.48
  6. Step 6: Final answer
    x = 18,978.22

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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.