Home / 13,379.36-18,458.56-8,666.24

Finding the Fourth Proportional to 13,379.36, 18,458.56 and 8,666.24

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Solution

The fourth proportional to 13,379.36, 18,458.56 and 8,666.24 is: 11,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.36 : 18,458.56 = 8,666.24 : x
  2. Step 2: Convert to fraction form
    13,379.36/18,458.56 = 8,666.24/x
  3. Step 3: Cross multiply
    13,379.36x = 18,458.56 × 8,666.24
  4. Step 4: Simplify right side
    13,379.36x = 159,966,311.01
  5. Step 5: Solve for x
    x = 159,966,311.01/13,379.36
  6. Step 6: Final answer
    x = 11,956.20

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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.