Home / 20,914.68-31,376.10-6,123.84

Finding the Fourth Proportional to 20,914.68, 31,376.10 and 6,123.84

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Solution

The fourth proportional to 20,914.68, 31,376.10 and 6,123.84 is: 9,186.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.68 : 31,376.10 = 6,123.84 : x
  2. Step 2: Convert to fraction form
    20,914.68/31,376.10 = 6,123.84/x
  3. Step 3: Cross multiply
    20,914.68x = 31,376.10 × 6,123.84
  4. Step 4: Simplify right side
    20,914.68x = 192,142,216.22
  5. Step 5: Solve for x
    x = 192,142,216.22/20,914.68
  6. Step 6: Final answer
    x = 9,186.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.