Home / 13,086.96-18,060.10-7,118.68

Finding the Fourth Proportional to 13,086.96, 18,060.10 and 7,118.68

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Solution

The fourth proportional to 13,086.96, 18,060.10 and 7,118.68 is: 9,823.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.96 : 18,060.10 = 7,118.68 : x
  2. Step 2: Convert to fraction form
    13,086.96/18,060.10 = 7,118.68/x
  3. Step 3: Cross multiply
    13,086.96x = 18,060.10 × 7,118.68
  4. Step 4: Simplify right side
    13,086.96x = 128,564,072.67
  5. Step 5: Solve for x
    x = 128,564,072.67/13,086.96
  6. Step 6: Final answer
    x = 9,823.83

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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.