Home / 20,761.32-31,101.84-17,389.53

Finding the Fourth Proportional to 20,761.32, 31,101.84 and 17,389.53

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Solution

The fourth proportional to 20,761.32, 31,101.84 and 17,389.53 is: 26,050.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.32 : 31,101.84 = 17,389.53 : x
  2. Step 2: Convert to fraction form
    20,761.32/31,101.84 = 17,389.53/x
  3. Step 3: Cross multiply
    20,761.32x = 31,101.84 × 17,389.53
  4. Step 4: Simplify right side
    20,761.32x = 540,846,379.74
  5. Step 5: Solve for x
    x = 540,846,379.74/20,761.32
  6. Step 6: Final answer
    x = 26,050.67

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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.