Home / 19,860.86-27,408.30-10,909.19

Finding the Fourth Proportional to 19,860.86, 27,408.30 and 10,909.19

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Solution

The fourth proportional to 19,860.86, 27,408.30 and 10,909.19 is: 15,054.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.86 : 27,408.30 = 10,909.19 : x
  2. Step 2: Convert to fraction form
    19,860.86/27,408.30 = 10,909.19/x
  3. Step 3: Cross multiply
    19,860.86x = 27,408.30 × 10,909.19
  4. Step 4: Simplify right side
    19,860.86x = 299,002,352.28
  5. Step 5: Solve for x
    x = 299,002,352.28/19,860.86
  6. Step 6: Final answer
    x = 15,054.85

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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.