Home / 13,216.34-18,238.80-7,247.65

Finding the Fourth Proportional to 13,216.34, 18,238.80 and 7,247.65

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Solution

The fourth proportional to 13,216.34, 18,238.80 and 7,247.65 is: 10,001.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.34 : 18,238.80 = 7,247.65 : x
  2. Step 2: Convert to fraction form
    13,216.34/18,238.80 = 7,247.65/x
  3. Step 3: Cross multiply
    13,216.34x = 18,238.80 × 7,247.65
  4. Step 4: Simplify right side
    13,216.34x = 132,188,438.82
  5. Step 5: Solve for x
    x = 132,188,438.82/13,216.34
  6. Step 6: Final answer
    x = 10,001.89

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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.