Home / 38,935.76-58,412.82-12,638.48

Finding the Fourth Proportional to 38,935.76, 58,412.82 and 12,638.48

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Solution

The fourth proportional to 38,935.76, 58,412.82 and 12,638.48 is: 18,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,935.76 : 58,412.82 = 12,638.48 : x
  2. Step 2: Convert to fraction form
    38,935.76/58,412.82 = 12,638.48/x
  3. Step 3: Cross multiply
    38,935.76x = 58,412.82 × 12,638.48
  4. Step 4: Simplify right side
    38,935.76x = 738,249,257.31
  5. Step 5: Solve for x
    x = 738,249,257.31/38,935.76
  6. Step 6: Final answer
    x = 18,960.70

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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.