Home / 20,774.04-31,159.22-5,191.65

Finding the Fourth Proportional to 20,774.04, 31,159.22 and 5,191.65

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Solution

The fourth proportional to 20,774.04, 31,159.22 and 5,191.65 is: 7,787.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.04 : 31,159.22 = 5,191.65 : x
  2. Step 2: Convert to fraction form
    20,774.04/31,159.22 = 5,191.65/x
  3. Step 3: Cross multiply
    20,774.04x = 31,159.22 × 5,191.65
  4. Step 4: Simplify right side
    20,774.04x = 161,767,738.55
  5. Step 5: Solve for x
    x = 161,767,738.55/20,774.04
  6. Step 6: Final answer
    x = 7,787.01

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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.