Home / 20,761.10-31,135.02-6,718.16

Finding the Fourth Proportional to 20,761.10, 31,135.02 and 6,718.16

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Solution

The fourth proportional to 20,761.10, 31,135.02 and 6,718.16 is: 10,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.10 : 31,135.02 = 6,718.16 : x
  2. Step 2: Convert to fraction form
    20,761.10/31,135.02 = 6,718.16/x
  3. Step 3: Cross multiply
    20,761.10x = 31,135.02 × 6,718.16
  4. Step 4: Simplify right side
    20,761.10x = 209,170,045.96
  5. Step 5: Solve for x
    x = 209,170,045.96/20,761.10
  6. Step 6: Final answer
    x = 10,075.09

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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.