Home / 30,859.94-42,586.92-16,712.78

Finding the Fourth Proportional to 30,859.94, 42,586.92 and 16,712.78

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Solution

The fourth proportional to 30,859.94, 42,586.92 and 16,712.78 is: 23,063.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,859.94 : 42,586.92 = 16,712.78 : x
  2. Step 2: Convert to fraction form
    30,859.94/42,586.92 = 16,712.78/x
  3. Step 3: Cross multiply
    30,859.94x = 42,586.92 × 16,712.78
  4. Step 4: Simplify right side
    30,859.94x = 711,745,931.30
  5. Step 5: Solve for x
    x = 711,745,931.30/30,859.94
  6. Step 6: Final answer
    x = 23,063.75

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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.