Home / 10,989.36-16,476.48-5,142.24

Finding the Fourth Proportional to 10,989.36, 16,476.48 and 5,142.24

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Solution

The fourth proportional to 10,989.36, 16,476.48 and 5,142.24 is: 7,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.36 : 16,476.48 = 5,142.24 : x
  2. Step 2: Convert to fraction form
    10,989.36/16,476.48 = 5,142.24/x
  3. Step 3: Cross multiply
    10,989.36x = 16,476.48 × 5,142.24
  4. Step 4: Simplify right side
    10,989.36x = 84,726,014.52
  5. Step 5: Solve for x
    x = 84,726,014.52/10,989.36
  6. Step 6: Final answer
    x = 7,709.82

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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.