Home / 20,334.93-28,062.80-11,382.40

Finding the Fourth Proportional to 20,334.93, 28,062.80 and 11,382.40

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Solution

The fourth proportional to 20,334.93, 28,062.80 and 11,382.40 is: 15,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.93 : 28,062.80 = 11,382.40 : x
  2. Step 2: Convert to fraction form
    20,334.93/28,062.80 = 11,382.40/x
  3. Step 3: Cross multiply
    20,334.93x = 28,062.80 × 11,382.40
  4. Step 4: Simplify right side
    20,334.93x = 319,422,014.72
  5. Step 5: Solve for x
    x = 319,422,014.72/20,334.93
  6. Step 6: Final answer
    x = 15,708.05

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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.