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Finding the Fourth Proportional to 20,653.56, 30,987.36 and 7,506.99

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Solution

The fourth proportional to 20,653.56, 30,987.36 and 7,506.99 is: 11,263.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.56 : 30,987.36 = 7,506.99 : x
  2. Step 2: Convert to fraction form
    20,653.56/30,987.36 = 7,506.99/x
  3. Step 3: Cross multiply
    20,653.56x = 30,987.36 × 7,506.99
  4. Step 4: Simplify right side
    20,653.56x = 232,621,801.65
  5. Step 5: Solve for x
    x = 232,621,801.65/20,653.56
  6. Step 6: Final answer
    x = 11,263.04

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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.