Home / 10,922.40-16,384.08-3,131.04

Finding the Fourth Proportional to 10,922.40, 16,384.08 and 3,131.04

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Solution

The fourth proportional to 10,922.40, 16,384.08 and 3,131.04 is: 4,696.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,922.40 : 16,384.08 = 3,131.04 : x
  2. Step 2: Convert to fraction form
    10,922.40/16,384.08 = 3,131.04/x
  3. Step 3: Cross multiply
    10,922.40x = 16,384.08 × 3,131.04
  4. Step 4: Simplify right side
    10,922.40x = 51,299,209.84
  5. Step 5: Solve for x
    x = 51,299,209.84/10,922.40
  6. Step 6: Final answer
    x = 4,696.70

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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.