Home / 21,275.65-31,913.46-5,692.87

Finding the Fourth Proportional to 21,275.65, 31,913.46 and 5,692.87

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Solution

The fourth proportional to 21,275.65, 31,913.46 and 5,692.87 is: 8,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.65 : 31,913.46 = 5,692.87 : x
  2. Step 2: Convert to fraction form
    21,275.65/31,913.46 = 5,692.87/x
  3. Step 3: Cross multiply
    21,275.65x = 31,913.46 × 5,692.87
  4. Step 4: Simplify right side
    21,275.65x = 181,679,179.03
  5. Step 5: Solve for x
    x = 181,679,179.03/21,275.65
  6. Step 6: Final answer
    x = 8,539.30

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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.