Home / 21,343.15-29,452.63-11,911.63

Finding the Fourth Proportional to 21,343.15, 29,452.63 and 11,911.63

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Solution

The fourth proportional to 21,343.15, 29,452.63 and 11,911.63 is: 16,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.15 : 29,452.63 = 11,911.63 : x
  2. Step 2: Convert to fraction form
    21,343.15/29,452.63 = 11,911.63/x
  3. Step 3: Cross multiply
    21,343.15x = 29,452.63 × 11,911.63
  4. Step 4: Simplify right side
    21,343.15x = 350,828,831.09
  5. Step 5: Solve for x
    x = 350,828,831.09/21,343.15
  6. Step 6: Final answer
    x = 16,437.54

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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.