Home / 20,708.76-31,030.74-11,340.84

Finding the Fourth Proportional to 20,708.76, 31,030.74 and 11,340.84

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Solution

The fourth proportional to 20,708.76, 31,030.74 and 11,340.84 is: 16,993.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.76 : 31,030.74 = 11,340.84 : x
  2. Step 2: Convert to fraction form
    20,708.76/31,030.74 = 11,340.84/x
  3. Step 3: Cross multiply
    20,708.76x = 31,030.74 × 11,340.84
  4. Step 4: Simplify right side
    20,708.76x = 351,914,657.42
  5. Step 5: Solve for x
    x = 351,914,657.42/20,708.76
  6. Step 6: Final answer
    x = 16,993.52

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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.