Home / 19,489.80-29,256.30-12,102.60

Finding the Fourth Proportional to 19,489.80, 29,256.30 and 12,102.60

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Solution

The fourth proportional to 19,489.80, 29,256.30 and 12,102.60 is: 18,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489.80 : 29,256.30 = 12,102.60 : x
  2. Step 2: Convert to fraction form
    19,489.80/29,256.30 = 12,102.60/x
  3. Step 3: Cross multiply
    19,489.80x = 29,256.30 × 12,102.60
  4. Step 4: Simplify right side
    19,489.80x = 354,077,296.38
  5. Step 5: Solve for x
    x = 354,077,296.38/19,489.80
  6. Step 6: Final answer
    x = 18,167.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.