Home / 11,912.47-16,438.95-6,607.18

Finding the Fourth Proportional to 11,912.47, 16,438.95 and 6,607.18

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Solution

The fourth proportional to 11,912.47, 16,438.95 and 6,607.18 is: 9,117.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.47 : 16,438.95 = 6,607.18 : x
  2. Step 2: Convert to fraction form
    11,912.47/16,438.95 = 6,607.18/x
  3. Step 3: Cross multiply
    11,912.47x = 16,438.95 × 6,607.18
  4. Step 4: Simplify right side
    11,912.47x = 108,615,101.66
  5. Step 5: Solve for x
    x = 108,615,101.66/11,912.47
  6. Step 6: Final answer
    x = 9,117.76

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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.