Home / 13,406.59-18,495.03-8,372.06

Finding the Fourth Proportional to 13,406.59, 18,495.03 and 8,372.06

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Solution

The fourth proportional to 13,406.59, 18,495.03 and 8,372.06 is: 11,549.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.59 : 18,495.03 = 8,372.06 : x
  2. Step 2: Convert to fraction form
    13,406.59/18,495.03 = 8,372.06/x
  3. Step 3: Cross multiply
    13,406.59x = 18,495.03 × 8,372.06
  4. Step 4: Simplify right side
    13,406.59x = 154,841,500.86
  5. Step 5: Solve for x
    x = 154,841,500.86/13,406.59
  6. Step 6: Final answer
    x = 11,549.66

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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.