Home / 19,921.12-27,491.22-10,968.40

Finding the Fourth Proportional to 19,921.12, 27,491.22 and 10,968.40

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Solution

The fourth proportional to 19,921.12, 27,491.22 and 10,968.40 is: 15,136.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.12 : 27,491.22 = 10,968.40 : x
  2. Step 2: Convert to fraction form
    19,921.12/27,491.22 = 10,968.40/x
  3. Step 3: Cross multiply
    19,921.12x = 27,491.22 × 10,968.40
  4. Step 4: Simplify right side
    19,921.12x = 301,534,697.45
  5. Step 5: Solve for x
    x = 301,534,697.45/19,921.12
  6. Step 6: Final answer
    x = 15,136.43

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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.