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Finding the Fourth Proportional to 15,469.51, 21,347.94 and 8,395.93

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Solution

The fourth proportional to 15,469.51, 21,347.94 and 8,395.93 is: 11,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.51 : 21,347.94 = 8,395.93 : x
  2. Step 2: Convert to fraction form
    15,469.51/21,347.94 = 8,395.93/x
  3. Step 3: Cross multiply
    15,469.51x = 21,347.94 × 8,395.93
  4. Step 4: Simplify right side
    15,469.51x = 179,235,767.90
  5. Step 5: Solve for x
    x = 179,235,767.90/15,469.51
  6. Step 6: Final answer
    x = 11,586.39

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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.