Home / 21,303.12-29,412-13,752.84

Finding the Fourth Proportional to 21,303.12, 29,412 and 13,752.84

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Solution

The fourth proportional to 21,303.12, 29,412 and 13,752.84 is: 18,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.12 : 29,412 = 13,752.84 : x
  2. Step 2: Convert to fraction form
    21,303.12/29,412 = 13,752.84/x
  3. Step 3: Cross multiply
    21,303.12x = 29,412 × 13,752.84
  4. Step 4: Simplify right side
    21,303.12x = 404,498,530.08
  5. Step 5: Solve for x
    x = 404,498,530.08/21,303.12
  6. Step 6: Final answer
    x = 18,987.76

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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.