Home / 21,276.06-31,928.68-7,425.06

Finding the Fourth Proportional to 21,276.06, 31,928.68 and 7,425.06

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Solution

The fourth proportional to 21,276.06, 31,928.68 and 7,425.06 is: 11,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.06 : 31,928.68 = 7,425.06 : x
  2. Step 2: Convert to fraction form
    21,276.06/31,928.68 = 7,425.06/x
  3. Step 3: Cross multiply
    21,276.06x = 31,928.68 × 7,425.06
  4. Step 4: Simplify right side
    21,276.06x = 237,072,364.72
  5. Step 5: Solve for x
    x = 237,072,364.72/21,276.06
  6. Step 6: Final answer
    x = 11,142.68

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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.