Home / 19,860.12-27,403.92-11,475

Finding the Fourth Proportional to 19,860.12, 27,403.92 and 11,475

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Solution

The fourth proportional to 19,860.12, 27,403.92 and 11,475 is: 15,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.12 : 27,403.92 = 11,475 : x
  2. Step 2: Convert to fraction form
    19,860.12/27,403.92 = 11,475/x
  3. Step 3: Cross multiply
    19,860.12x = 27,403.92 × 11,475
  4. Step 4: Simplify right side
    19,860.12x = 314,459,982
  5. Step 5: Solve for x
    x = 314,459,982/19,860.12
  6. Step 6: Final answer
    x = 15,833.74

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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.