Home / 30,985.92-42,758.82-16,838.66

Finding the Fourth Proportional to 30,985.92, 42,758.82 and 16,838.66

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Solution

The fourth proportional to 30,985.92, 42,758.82 and 16,838.66 is: 23,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.92 : 42,758.82 = 16,838.66 : x
  2. Step 2: Convert to fraction form
    30,985.92/42,758.82 = 16,838.66/x
  3. Step 3: Cross multiply
    30,985.92x = 42,758.82 × 16,838.66
  4. Step 4: Simplify right side
    30,985.92x = 720,001,231.98
  5. Step 5: Solve for x
    x = 720,001,231.98/30,985.92
  6. Step 6: Final answer
    x = 23,236.40

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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.