Home / 20,895.12-28,835.28-11,464.20

Finding the Fourth Proportional to 20,895.12, 28,835.28 and 11,464.20

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Solution

The fourth proportional to 20,895.12, 28,835.28 and 11,464.20 is: 15,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.12 : 28,835.28 = 11,464.20 : x
  2. Step 2: Convert to fraction form
    20,895.12/28,835.28 = 11,464.20/x
  3. Step 3: Cross multiply
    20,895.12x = 28,835.28 × 11,464.20
  4. Step 4: Simplify right side
    20,895.12x = 330,573,416.98
  5. Step 5: Solve for x
    x = 330,573,416.98/20,895.12
  6. Step 6: Final answer
    x = 15,820.60

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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.