Home / 13,491.85-18,611.27-7,901.77

Finding the Fourth Proportional to 13,491.85, 18,611.27 and 7,901.77

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Solution

The fourth proportional to 13,491.85, 18,611.27 and 7,901.77 is: 10,900.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.85 : 18,611.27 = 7,901.77 : x
  2. Step 2: Convert to fraction form
    13,491.85/18,611.27 = 7,901.77/x
  3. Step 3: Cross multiply
    13,491.85x = 18,611.27 × 7,901.77
  4. Step 4: Simplify right side
    13,491.85x = 147,061,935.44
  5. Step 5: Solve for x
    x = 147,061,935.44/13,491.85
  6. Step 6: Final answer
    x = 10,900.06

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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.