Home / 13,777.17-18,964.17-12,005.70

Finding the Fourth Proportional to 13,777.17, 18,964.17 and 12,005.70

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Solution

The fourth proportional to 13,777.17, 18,964.17 and 12,005.70 is: 16,525.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.17 : 18,964.17 = 12,005.70 : x
  2. Step 2: Convert to fraction form
    13,777.17/18,964.17 = 12,005.70/x
  3. Step 3: Cross multiply
    13,777.17x = 18,964.17 × 12,005.70
  4. Step 4: Simplify right side
    13,777.17x = 227,678,135.77
  5. Step 5: Solve for x
    x = 227,678,135.77/13,777.17
  6. Step 6: Final answer
    x = 16,525.75

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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.