Home / 14,990.09-20,686.03-8,275.33

Finding the Fourth Proportional to 14,990.09, 20,686.03 and 8,275.33

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Solution

The fourth proportional to 14,990.09, 20,686.03 and 8,275.33 is: 11,419.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.09 : 20,686.03 = 8,275.33 : x
  2. Step 2: Convert to fraction form
    14,990.09/20,686.03 = 8,275.33/x
  3. Step 3: Cross multiply
    14,990.09x = 20,686.03 × 8,275.33
  4. Step 4: Simplify right side
    14,990.09x = 171,183,724.64
  5. Step 5: Solve for x
    x = 171,183,724.64/14,990.09
  6. Step 6: Final answer
    x = 11,419.79

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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.