Home / 14,786.45-20,405.17-8,071.98

Finding the Fourth Proportional to 14,786.45, 20,405.17 and 8,071.98

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Solution

The fourth proportional to 14,786.45, 20,405.17 and 8,071.98 is: 11,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,786.45 : 20,405.17 = 8,071.98 : x
  2. Step 2: Convert to fraction form
    14,786.45/20,405.17 = 8,071.98/x
  3. Step 3: Cross multiply
    14,786.45x = 20,405.17 × 8,071.98
  4. Step 4: Simplify right side
    14,786.45x = 164,710,022.11
  5. Step 5: Solve for x
    x = 164,710,022.11/14,786.45
  6. Step 6: Final answer
    x = 11,139.26

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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.