Home / 20,717.24-31,075.84-5,134.86

Finding the Fourth Proportional to 20,717.24, 31,075.84 and 5,134.86

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Solution

The fourth proportional to 20,717.24, 31,075.84 and 5,134.86 is: 7,702.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.24 : 31,075.84 = 5,134.86 : x
  2. Step 2: Convert to fraction form
    20,717.24/31,075.84 = 5,134.86/x
  3. Step 3: Cross multiply
    20,717.24x = 31,075.84 × 5,134.86
  4. Step 4: Simplify right side
    20,717.24x = 159,570,065.32
  5. Step 5: Solve for x
    x = 159,570,065.32/20,717.24
  6. Step 6: Final answer
    x = 7,702.29

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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.