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Finding the Fourth Proportional to 11,903.15, 16,415.01 and 7,122.33

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Solution

The fourth proportional to 11,903.15, 16,415.01 and 7,122.33 is: 9,822.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,903.15 : 16,415.01 = 7,122.33 : x
  2. Step 2: Convert to fraction form
    11,903.15/16,415.01 = 7,122.33/x
  3. Step 3: Cross multiply
    11,903.15x = 16,415.01 × 7,122.33
  4. Step 4: Simplify right side
    11,903.15x = 116,913,118.17
  5. Step 5: Solve for x
    x = 116,913,118.17/11,903.15
  6. Step 6: Final answer
    x = 9,822.04

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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.