Home / 30,719.70-42,382.62-18,624.08

Finding the Fourth Proportional to 30,719.70, 42,382.62 and 18,624.08

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Solution

The fourth proportional to 30,719.70, 42,382.62 and 18,624.08 is: 25,694.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,719.70 : 42,382.62 = 18,624.08 : x
  2. Step 2: Convert to fraction form
    30,719.70/42,382.62 = 18,624.08/x
  3. Step 3: Cross multiply
    30,719.70x = 42,382.62 × 18,624.08
  4. Step 4: Simplify right side
    30,719.70x = 789,337,411.45
  5. Step 5: Solve for x
    x = 789,337,411.45/30,719.70
  6. Step 6: Final answer
    x = 25,694.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.