Home / 30,849.90-42,572.88-16,702.74

Finding the Fourth Proportional to 30,849.90, 42,572.88 and 16,702.74

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Solution

The fourth proportional to 30,849.90, 42,572.88 and 16,702.74 is: 23,049.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,849.90 : 42,572.88 = 16,702.74 : x
  2. Step 2: Convert to fraction form
    30,849.90/42,572.88 = 16,702.74/x
  3. Step 3: Cross multiply
    30,849.90x = 42,572.88 × 16,702.74
  4. Step 4: Simplify right side
    30,849.90x = 711,083,745.69
  5. Step 5: Solve for x
    x = 711,083,745.69/30,849.90
  6. Step 6: Final answer
    x = 23,049.79

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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.