Home / 12,178.16-16,801.34-8,999.12

Finding the Fourth Proportional to 12,178.16, 16,801.34 and 8,999.12

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Solution

The fourth proportional to 12,178.16, 16,801.34 and 8,999.12 is: 12,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.16 : 16,801.34 = 8,999.12 : x
  2. Step 2: Convert to fraction form
    12,178.16/16,801.34 = 8,999.12/x
  3. Step 3: Cross multiply
    12,178.16x = 16,801.34 × 8,999.12
  4. Step 4: Simplify right side
    12,178.16x = 151,197,274.82
  5. Step 5: Solve for x
    x = 151,197,274.82/12,178.16
  6. Step 6: Final answer
    x = 12,415.44

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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.