Home / 12,172.48-18,223.12-11,005.18

Finding the Fourth Proportional to 12,172.48, 18,223.12 and 11,005.18

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Solution

The fourth proportional to 12,172.48, 18,223.12 and 11,005.18 is: 16,475.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.48 : 18,223.12 = 11,005.18 : x
  2. Step 2: Convert to fraction form
    12,172.48/18,223.12 = 11,005.18/x
  3. Step 3: Cross multiply
    12,172.48x = 18,223.12 × 11,005.18
  4. Step 4: Simplify right side
    12,172.48x = 200,548,715.76
  5. Step 5: Solve for x
    x = 200,548,715.76/12,172.48
  6. Step 6: Final answer
    x = 16,475.58

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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.