Home / 20,717.20-31,075.80-5,926.60

Finding the Fourth Proportional to 20,717.20, 31,075.80 and 5,926.60

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Solution

The fourth proportional to 20,717.20, 31,075.80 and 5,926.60 is: 8,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.20 : 31,075.80 = 5,926.60 : x
  2. Step 2: Convert to fraction form
    20,717.20/31,075.80 = 5,926.60/x
  3. Step 3: Cross multiply
    20,717.20x = 31,075.80 × 5,926.60
  4. Step 4: Simplify right side
    20,717.20x = 184,173,836.28
  5. Step 5: Solve for x
    x = 184,173,836.28/20,717.20
  6. Step 6: Final answer
    x = 8,889.90

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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.