Home / 21,343.48-29,452.38-12,389.54

Finding the Fourth Proportional to 21,343.48, 29,452.38 and 12,389.54

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Solution

The fourth proportional to 21,343.48, 29,452.38 and 12,389.54 is: 17,096.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.48 : 29,452.38 = 12,389.54 : x
  2. Step 2: Convert to fraction form
    21,343.48/29,452.38 = 12,389.54/x
  3. Step 3: Cross multiply
    21,343.48x = 29,452.38 × 12,389.54
  4. Step 4: Simplify right side
    21,343.48x = 364,901,440.11
  5. Step 5: Solve for x
    x = 364,901,440.11/21,343.48
  6. Step 6: Final answer
    x = 17,096.62

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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.