Home / 21,303.97-29,396.05-12,804.06

Finding the Fourth Proportional to 21,303.97, 29,396.05 and 12,804.06

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Solution

The fourth proportional to 21,303.97, 29,396.05 and 12,804.06 is: 17,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.97 : 29,396.05 = 12,804.06 : x
  2. Step 2: Convert to fraction form
    21,303.97/29,396.05 = 12,804.06/x
  3. Step 3: Cross multiply
    21,303.97x = 29,396.05 × 12,804.06
  4. Step 4: Simplify right side
    21,303.97x = 376,388,866.19
  5. Step 5: Solve for x
    x = 376,388,866.19/21,303.97
  6. Step 6: Final answer
    x = 17,667.55

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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.