Home / 16,188.12-22,343.40-9,905.76

Finding the Fourth Proportional to 16,188.12, 22,343.40 and 9,905.76

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Solution

The fourth proportional to 16,188.12, 22,343.40 and 9,905.76 is: 13,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,188.12 : 22,343.40 = 9,905.76 : x
  2. Step 2: Convert to fraction form
    16,188.12/22,343.40 = 9,905.76/x
  3. Step 3: Cross multiply
    16,188.12x = 22,343.40 × 9,905.76
  4. Step 4: Simplify right side
    16,188.12x = 221,328,357.98
  5. Step 5: Solve for x
    x = 221,328,357.98/16,188.12
  6. Step 6: Final answer
    x = 13,672.27

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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.