Home / 30,647.65-42,291.16-17,217.85

Finding the Fourth Proportional to 30,647.65, 42,291.16 and 17,217.85

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Solution

The fourth proportional to 30,647.65, 42,291.16 and 17,217.85 is: 23,759.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,647.65 : 42,291.16 = 17,217.85 : x
  2. Step 2: Convert to fraction form
    30,647.65/42,291.16 = 17,217.85/x
  3. Step 3: Cross multiply
    30,647.65x = 42,291.16 × 17,217.85
  4. Step 4: Simplify right side
    30,647.65x = 728,162,849.21
  5. Step 5: Solve for x
    x = 728,162,849.21/30,647.65
  6. Step 6: Final answer
    x = 23,759.17

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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.