Home / 21,275.05-29,355.13-12,322.02

Finding the Fourth Proportional to 21,275.05, 29,355.13 and 12,322.02

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Solution

The fourth proportional to 21,275.05, 29,355.13 and 12,322.02 is: 17,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.05 : 29,355.13 = 12,322.02 : x
  2. Step 2: Convert to fraction form
    21,275.05/29,355.13 = 12,322.02/x
  3. Step 3: Cross multiply
    21,275.05x = 29,355.13 × 12,322.02
  4. Step 4: Simplify right side
    21,275.05x = 361,714,437.35
  5. Step 5: Solve for x
    x = 361,714,437.35/21,275.05
  6. Step 6: Final answer
    x = 17,001.81

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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.