Home / 15,469.29-21,347.64-8,395.83

Finding the Fourth Proportional to 15,469.29, 21,347.64 and 8,395.83

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Solution

The fourth proportional to 15,469.29, 21,347.64 and 8,395.83 is: 11,586.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.29 : 21,347.64 = 8,395.83 : x
  2. Step 2: Convert to fraction form
    15,469.29/21,347.64 = 8,395.83/x
  3. Step 3: Cross multiply
    15,469.29x = 21,347.64 × 8,395.83
  4. Step 4: Simplify right side
    15,469.29x = 179,231,156.34
  5. Step 5: Solve for x
    x = 179,231,156.34/15,469.29
  6. Step 6: Final answer
    x = 11,586.26

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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.