Home / 11,399.20-15,726.14-7,572.64

Finding the Fourth Proportional to 11,399.20, 15,726.14 and 7,572.64

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Solution

The fourth proportional to 11,399.20, 15,726.14 and 7,572.64 is: 10,447.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.20 : 15,726.14 = 7,572.64 : x
  2. Step 2: Convert to fraction form
    11,399.20/15,726.14 = 7,572.64/x
  3. Step 3: Cross multiply
    11,399.20x = 15,726.14 × 7,572.64
  4. Step 4: Simplify right side
    11,399.20x = 119,088,396.81
  5. Step 5: Solve for x
    x = 119,088,396.81/11,399.20
  6. Step 6: Final answer
    x = 10,447.08

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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.