Home / 13,207.31-18,225.98-7,238.96

Finding the Fourth Proportional to 13,207.31, 18,225.98 and 7,238.96

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Solution

The fourth proportional to 13,207.31, 18,225.98 and 7,238.96 is: 9,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.31 : 18,225.98 = 7,238.96 : x
  2. Step 2: Convert to fraction form
    13,207.31/18,225.98 = 7,238.96/x
  3. Step 3: Cross multiply
    13,207.31x = 18,225.98 × 7,238.96
  4. Step 4: Simplify right side
    13,207.31x = 131,937,149.55
  5. Step 5: Solve for x
    x = 131,937,149.55/13,207.31
  6. Step 6: Final answer
    x = 9,989.71

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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.