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Finding the Fourth Proportional to 11,959.58, 16,500.92 and 7,178.28

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Solution

The fourth proportional to 11,959.58, 16,500.92 and 7,178.28 is: 9,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.58 : 16,500.92 = 7,178.28 : x
  2. Step 2: Convert to fraction form
    11,959.58/16,500.92 = 7,178.28/x
  3. Step 3: Cross multiply
    11,959.58x = 16,500.92 × 7,178.28
  4. Step 4: Simplify right side
    11,959.58x = 118,448,224.02
  5. Step 5: Solve for x
    x = 118,448,224.02/11,959.58
  6. Step 6: Final answer
    x = 9,904.05

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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.