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Finding the Fourth Proportional to 15,156.99, 20,926.96 and 9,494.08

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Solution

The fourth proportional to 15,156.99, 20,926.96 and 9,494.08 is: 13,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.99 : 20,926.96 = 9,494.08 : x
  2. Step 2: Convert to fraction form
    15,156.99/20,926.96 = 9,494.08/x
  3. Step 3: Cross multiply
    15,156.99x = 20,926.96 × 9,494.08
  4. Step 4: Simplify right side
    15,156.99x = 198,682,156.34
  5. Step 5: Solve for x
    x = 198,682,156.34/15,156.99
  6. Step 6: Final answer
    x = 13,108.29

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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.