Home / 20,927.96-31,392.30-7,610.40

Finding the Fourth Proportional to 20,927.96, 31,392.30 and 7,610.40

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Solution

The fourth proportional to 20,927.96, 31,392.30 and 7,610.40 is: 11,415.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.96 : 31,392.30 = 7,610.40 : x
  2. Step 2: Convert to fraction form
    20,927.96/31,392.30 = 7,610.40/x
  3. Step 3: Cross multiply
    20,927.96x = 31,392.30 × 7,610.40
  4. Step 4: Simplify right side
    20,927.96x = 238,907,959.92
  5. Step 5: Solve for x
    x = 238,907,959.92/20,927.96
  6. Step 6: Final answer
    x = 11,415.73

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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.