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Finding the Fourth Proportional to 20,595.65, 30,895.87 and 7,454.21

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Solution

The fourth proportional to 20,595.65, 30,895.87 and 7,454.21 is: 11,182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.65 : 30,895.87 = 7,454.21 : x
  2. Step 2: Convert to fraction form
    20,595.65/30,895.87 = 7,454.21/x
  3. Step 3: Cross multiply
    20,595.65x = 30,895.87 × 7,454.21
  4. Step 4: Simplify right side
    20,595.65x = 230,304,148.63
  5. Step 5: Solve for x
    x = 230,304,148.63/20,595.65
  6. Step 6: Final answer
    x = 11,182.18

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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.