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Finding the Fourth Proportional to 13,225.72, 19,843.68 and 6,985.48

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Solution

The fourth proportional to 13,225.72, 19,843.68 and 6,985.48 is: 10,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.72 : 19,843.68 = 6,985.48 : x
  2. Step 2: Convert to fraction form
    13,225.72/19,843.68 = 6,985.48/x
  3. Step 3: Cross multiply
    13,225.72x = 19,843.68 × 6,985.48
  4. Step 4: Simplify right side
    13,225.72x = 138,617,629.77
  5. Step 5: Solve for x
    x = 138,617,629.77/13,225.72
  6. Step 6: Final answer
    x = 10,480.91

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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.