Home / 15,108.99-20,853.72-8,396.91

Finding the Fourth Proportional to 15,108.99, 20,853.72 and 8,396.91

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Solution

The fourth proportional to 15,108.99, 20,853.72 and 8,396.91 is: 11,589.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.99 : 20,853.72 = 8,396.91 : x
  2. Step 2: Convert to fraction form
    15,108.99/20,853.72 = 8,396.91/x
  3. Step 3: Cross multiply
    15,108.99x = 20,853.72 × 8,396.91
  4. Step 4: Simplify right side
    15,108.99x = 175,106,810.01
  5. Step 5: Solve for x
    x = 175,106,810.01/15,108.99
  6. Step 6: Final answer
    x = 11,589.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.