Home / 30,511.65-42,102.39-17,081.85

Finding the Fourth Proportional to 30,511.65, 42,102.39 and 17,081.85

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Solution

The fourth proportional to 30,511.65, 42,102.39 and 17,081.85 is: 23,570.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,511.65 : 42,102.39 = 17,081.85 : x
  2. Step 2: Convert to fraction form
    30,511.65/42,102.39 = 17,081.85/x
  3. Step 3: Cross multiply
    30,511.65x = 42,102.39 × 17,081.85
  4. Step 4: Simplify right side
    30,511.65x = 719,186,710.62
  5. Step 5: Solve for x
    x = 719,186,710.62/30,511.65
  6. Step 6: Final answer
    x = 23,570.89

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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.