Home / 13,347.65-18,419.40-7,379.57

Finding the Fourth Proportional to 13,347.65, 18,419.40 and 7,379.57

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Solution

The fourth proportional to 13,347.65, 18,419.40 and 7,379.57 is: 10,183.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.65 : 18,419.40 = 7,379.57 : x
  2. Step 2: Convert to fraction form
    13,347.65/18,419.40 = 7,379.57/x
  3. Step 3: Cross multiply
    13,347.65x = 18,419.40 × 7,379.57
  4. Step 4: Simplify right side
    13,347.65x = 135,927,297.71
  5. Step 5: Solve for x
    x = 135,927,297.71/13,347.65
  6. Step 6: Final answer
    x = 10,183.61

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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.