Home / 10,921.11-16,384.50-3,130.53

Finding the Fourth Proportional to 10,921.11, 16,384.50 and 3,130.53

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Solution

The fourth proportional to 10,921.11, 16,384.50 and 3,130.53 is: 4,696.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.11 : 16,384.50 = 3,130.53 : x
  2. Step 2: Convert to fraction form
    10,921.11/16,384.50 = 3,130.53/x
  3. Step 3: Cross multiply
    10,921.11x = 16,384.50 × 3,130.53
  4. Step 4: Simplify right side
    10,921.11x = 51,292,168.79
  5. Step 5: Solve for x
    x = 51,292,168.79/10,921.11
  6. Step 6: Final answer
    x = 4,696.61

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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.