Home / 21,829.97-30,125.40-12,398.53

Finding the Fourth Proportional to 21,829.97, 30,125.40 and 12,398.53

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Solution

The fourth proportional to 21,829.97, 30,125.40 and 12,398.53 is: 17,110.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.97 : 30,125.40 = 12,398.53 : x
  2. Step 2: Convert to fraction form
    21,829.97/30,125.40 = 12,398.53/x
  3. Step 3: Cross multiply
    21,829.97x = 30,125.40 × 12,398.53
  4. Step 4: Simplify right side
    21,829.97x = 373,510,666.82
  5. Step 5: Solve for x
    x = 373,510,666.82/21,829.97
  6. Step 6: Final answer
    x = 17,110.00

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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.