Home / 30,920.35-42,670.85-17,490.97

Finding the Fourth Proportional to 30,920.35, 42,670.85 and 17,490.97

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Solution

The fourth proportional to 30,920.35, 42,670.85 and 17,490.97 is: 24,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,920.35 : 42,670.85 = 17,490.97 : x
  2. Step 2: Convert to fraction form
    30,920.35/42,670.85 = 17,490.97/x
  3. Step 3: Cross multiply
    30,920.35x = 42,670.85 × 17,490.97
  4. Step 4: Simplify right side
    30,920.35x = 746,354,557.22
  5. Step 5: Solve for x
    x = 746,354,557.22/30,920.35
  6. Step 6: Final answer
    x = 24,137.97

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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.