Home / 45,291.57-67,938.89-12,015

Finding the Fourth Proportional to 45,291.57, 67,938.89 and 12,015

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Solution

The fourth proportional to 45,291.57, 67,938.89 and 12,015 is: 18,022.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,291.57 : 67,938.89 = 12,015 : x
  2. Step 2: Convert to fraction form
    45,291.57/67,938.89 = 12,015/x
  3. Step 3: Cross multiply
    45,291.57x = 67,938.89 × 12,015
  4. Step 4: Simplify right side
    45,291.57x = 816,285,703.28
  5. Step 5: Solve for x
    x = 816,285,703.28/45,291.57
  6. Step 6: Final answer
    x = 18,022.91

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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.