Home / 20,928.41-31,397.73-9,822.16

Finding the Fourth Proportional to 20,928.41, 31,397.73 and 9,822.16

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Solution

The fourth proportional to 20,928.41, 31,397.73 and 9,822.16 is: 14,735.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.41 : 31,397.73 = 9,822.16 : x
  2. Step 2: Convert to fraction form
    20,928.41/31,397.73 = 9,822.16/x
  3. Step 3: Cross multiply
    20,928.41x = 31,397.73 × 9,822.16
  4. Step 4: Simplify right side
    20,928.41x = 308,393,530.11
  5. Step 5: Solve for x
    x = 308,393,530.11/20,928.41
  6. Step 6: Final answer
    x = 14,735.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.