Home / 13,631.55-18,811.17-7,663.09

Finding the Fourth Proportional to 13,631.55, 18,811.17 and 7,663.09

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Solution

The fourth proportional to 13,631.55, 18,811.17 and 7,663.09 is: 10,574.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.55 : 18,811.17 = 7,663.09 : x
  2. Step 2: Convert to fraction form
    13,631.55/18,811.17 = 7,663.09/x
  3. Step 3: Cross multiply
    13,631.55x = 18,811.17 × 7,663.09
  4. Step 4: Simplify right side
    13,631.55x = 144,151,688.72
  5. Step 5: Solve for x
    x = 144,151,688.72/13,631.55
  6. Step 6: Final answer
    x = 10,574.86

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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.