Home / 21,343.10-29,455.09-11,784.80

Finding the Fourth Proportional to 21,343.10, 29,455.09 and 11,784.80

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Solution

The fourth proportional to 21,343.10, 29,455.09 and 11,784.80 is: 16,263.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.10 : 29,455.09 = 11,784.80 : x
  2. Step 2: Convert to fraction form
    21,343.10/29,455.09 = 11,784.80/x
  3. Step 3: Cross multiply
    21,343.10x = 29,455.09 × 11,784.80
  4. Step 4: Simplify right side
    21,343.10x = 347,122,388.81
  5. Step 5: Solve for x
    x = 347,122,388.81/21,343.10
  6. Step 6: Final answer
    x = 16,263.92

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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.