Home / 45,189.65-67,787.81-11,909.49

Finding the Fourth Proportional to 45,189.65, 67,787.81 and 11,909.49

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Solution

The fourth proportional to 45,189.65, 67,787.81 and 11,909.49 is: 17,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,189.65 : 67,787.81 = 11,909.49 : x
  2. Step 2: Convert to fraction form
    45,189.65/67,787.81 = 11,909.49/x
  3. Step 3: Cross multiply
    45,189.65x = 67,787.81 × 11,909.49
  4. Step 4: Simplify right side
    45,189.65x = 807,318,185.77
  5. Step 5: Solve for x
    x = 807,318,185.77/45,189.65
  6. Step 6: Final answer
    x = 17,865.11

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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.