Home / 21,353.09-29,462.76-12,395.96

Finding the Fourth Proportional to 21,353.09, 29,462.76 and 12,395.96

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Solution

The fourth proportional to 21,353.09, 29,462.76 and 12,395.96 is: 17,103.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.09 : 29,462.76 = 12,395.96 : x
  2. Step 2: Convert to fraction form
    21,353.09/29,462.76 = 12,395.96/x
  3. Step 3: Cross multiply
    21,353.09x = 29,462.76 × 12,395.96
  4. Step 4: Simplify right side
    21,353.09x = 365,219,275.35
  5. Step 5: Solve for x
    x = 365,219,275.35/21,353.09
  6. Step 6: Final answer
    x = 17,103.81

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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.