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Finding the Fourth Proportional to 19,799.51, 29,699.25 and 7,953.28

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Solution

The fourth proportional to 19,799.51, 29,699.25 and 7,953.28 is: 11,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,799.51 : 29,699.25 = 7,953.28 : x
  2. Step 2: Convert to fraction form
    19,799.51/29,699.25 = 7,953.28/x
  3. Step 3: Cross multiply
    19,799.51x = 29,699.25 × 7,953.28
  4. Step 4: Simplify right side
    19,799.51x = 236,206,262.78
  5. Step 5: Solve for x
    x = 236,206,262.78/19,799.51
  6. Step 6: Final answer
    x = 11,929.91

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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.