Home / 20,952.76-31,439.37-9,860.56

Finding the Fourth Proportional to 20,952.76, 31,439.37 and 9,860.56

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Solution

The fourth proportional to 20,952.76, 31,439.37 and 9,860.56 is: 14,795.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.76 : 31,439.37 = 9,860.56 : x
  2. Step 2: Convert to fraction form
    20,952.76/31,439.37 = 9,860.56/x
  3. Step 3: Cross multiply
    20,952.76x = 31,439.37 × 9,860.56
  4. Step 4: Simplify right side
    20,952.76x = 310,009,794.25
  5. Step 5: Solve for x
    x = 310,009,794.25/20,952.76
  6. Step 6: Final answer
    x = 14,795.65

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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.