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Finding the Fourth Proportional to 12,651, 17,458.20 and 7,348.80

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Solution

The fourth proportional to 12,651, 17,458.20 and 7,348.80 is: 10,141.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651 : 17,458.20 = 7,348.80 : x
  2. Step 2: Convert to fraction form
    12,651/17,458.20 = 7,348.80/x
  3. Step 3: Cross multiply
    12,651x = 17,458.20 × 7,348.80
  4. Step 4: Simplify right side
    12,651x = 128,296,820.16
  5. Step 5: Solve for x
    x = 128,296,820.16/12,651
  6. Step 6: Final answer
    x = 10,141.24

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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.