Home / 13,406.11-18,499.79-7,438.23

Finding the Fourth Proportional to 13,406.11, 18,499.79 and 7,438.23

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Solution

The fourth proportional to 13,406.11, 18,499.79 and 7,438.23 is: 10,264.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.11 : 18,499.79 = 7,438.23 : x
  2. Step 2: Convert to fraction form
    13,406.11/18,499.79 = 7,438.23/x
  3. Step 3: Cross multiply
    13,406.11x = 18,499.79 × 7,438.23
  4. Step 4: Simplify right side
    13,406.11x = 137,605,711.57
  5. Step 5: Solve for x
    x = 137,605,711.57/13,406.11
  6. Step 6: Final answer
    x = 10,264.40

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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.