Home / 13,215.54-18,237.84-7,247.55

Finding the Fourth Proportional to 13,215.54, 18,237.84 and 7,247.55

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Solution

The fourth proportional to 13,215.54, 18,237.84 and 7,247.55 is: 10,001.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.54 : 18,237.84 = 7,247.55 : x
  2. Step 2: Convert to fraction form
    13,215.54/18,237.84 = 7,247.55/x
  3. Step 3: Cross multiply
    13,215.54x = 18,237.84 × 7,247.55
  4. Step 4: Simplify right side
    13,215.54x = 132,179,657.29
  5. Step 5: Solve for x
    x = 132,179,657.29/13,215.54
  6. Step 6: Final answer
    x = 10,001.84

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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.