Home / 21,265.24-31,877.04-7,928.47

Finding the Fourth Proportional to 21,265.24, 31,877.04 and 7,928.47

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Solution

The fourth proportional to 21,265.24, 31,877.04 and 7,928.47 is: 11,884.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.24 : 31,877.04 = 7,928.47 : x
  2. Step 2: Convert to fraction form
    21,265.24/31,877.04 = 7,928.47/x
  3. Step 3: Cross multiply
    21,265.24x = 31,877.04 × 7,928.47
  4. Step 4: Simplify right side
    21,265.24x = 252,736,155.33
  5. Step 5: Solve for x
    x = 252,736,155.33/21,265.24
  6. Step 6: Final answer
    x = 11,884.94

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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.