Home / 13,386.93-18,474.11-7,418.71

Finding the Fourth Proportional to 13,386.93, 18,474.11 and 7,418.71

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Solution

The fourth proportional to 13,386.93, 18,474.11 and 7,418.71 is: 10,237.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.93 : 18,474.11 = 7,418.71 : x
  2. Step 2: Convert to fraction form
    13,386.93/18,474.11 = 7,418.71/x
  3. Step 3: Cross multiply
    13,386.93x = 18,474.11 × 7,418.71
  4. Step 4: Simplify right side
    13,386.93x = 137,054,064.60
  5. Step 5: Solve for x
    x = 137,054,064.60/13,386.93
  6. Step 6: Final answer
    x = 10,237.90

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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.