Home / 20,717.17-31,075.74-5,134.80

Finding the Fourth Proportional to 20,717.17, 31,075.74 and 5,134.80

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Solution

The fourth proportional to 20,717.17, 31,075.74 and 5,134.80 is: 7,702.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.17 : 31,075.74 = 5,134.80 : x
  2. Step 2: Convert to fraction form
    20,717.17/31,075.74 = 5,134.80/x
  3. Step 3: Cross multiply
    20,717.17x = 31,075.74 × 5,134.80
  4. Step 4: Simplify right side
    20,717.17x = 159,567,644.90
  5. Step 5: Solve for x
    x = 159,567,644.90/20,717.17
  6. Step 6: Final answer
    x = 7,702.19

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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.