Home / 21,191.52-29,242.36-12,576.22

Finding the Fourth Proportional to 21,191.52, 29,242.36 and 12,576.22

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Solution

The fourth proportional to 21,191.52, 29,242.36 and 12,576.22 is: 17,354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.52 : 29,242.36 = 12,576.22 : x
  2. Step 2: Convert to fraction form
    21,191.52/29,242.36 = 12,576.22/x
  3. Step 3: Cross multiply
    21,191.52x = 29,242.36 × 12,576.22
  4. Step 4: Simplify right side
    21,191.52x = 367,758,352.68
  5. Step 5: Solve for x
    x = 367,758,352.68/21,191.52
  6. Step 6: Final answer
    x = 17,354.03

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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.