Home / 12,299.36-16,987.28-8,957.12

Finding the Fourth Proportional to 12,299.36, 16,987.28 and 8,957.12

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Solution

The fourth proportional to 12,299.36, 16,987.28 and 8,957.12 is: 12,371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.36 : 16,987.28 = 8,957.12 : x
  2. Step 2: Convert to fraction form
    12,299.36/16,987.28 = 8,957.12/x
  3. Step 3: Cross multiply
    12,299.36x = 16,987.28 × 8,957.12
  4. Step 4: Simplify right side
    12,299.36x = 152,157,105.43
  5. Step 5: Solve for x
    x = 152,157,105.43/12,299.36
  6. Step 6: Final answer
    x = 12,371.14

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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.