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Finding the Fourth Proportional to 15,699.51, 21,671.01 and 10,396.04

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Solution

The fourth proportional to 15,699.51, 21,671.01 and 10,396.04 is: 14,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.51 : 21,671.01 = 10,396.04 : x
  2. Step 2: Convert to fraction form
    15,699.51/21,671.01 = 10,396.04/x
  3. Step 3: Cross multiply
    15,699.51x = 21,671.01 × 10,396.04
  4. Step 4: Simplify right side
    15,699.51x = 225,292,686.80
  5. Step 5: Solve for x
    x = 225,292,686.80/15,699.51
  6. Step 6: Final answer
    x = 14,350.30

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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.