Home / 20,827.84-28,741.98-11,396.20

Finding the Fourth Proportional to 20,827.84, 28,741.98 and 11,396.20

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Solution

The fourth proportional to 20,827.84, 28,741.98 and 11,396.20 is: 15,726.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.84 : 28,741.98 = 11,396.20 : x
  2. Step 2: Convert to fraction form
    20,827.84/28,741.98 = 11,396.20/x
  3. Step 3: Cross multiply
    20,827.84x = 28,741.98 × 11,396.20
  4. Step 4: Simplify right side
    20,827.84x = 327,549,352.48
  5. Step 5: Solve for x
    x = 327,549,352.48/20,827.84
  6. Step 6: Final answer
    x = 15,726.52

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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.