Home / 20,445.84-28,215.24-11,493.72

Finding the Fourth Proportional to 20,445.84, 28,215.24 and 11,493.72

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Solution

The fourth proportional to 20,445.84, 28,215.24 and 11,493.72 is: 15,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.84 : 28,215.24 = 11,493.72 : x
  2. Step 2: Convert to fraction form
    20,445.84/28,215.24 = 11,493.72/x
  3. Step 3: Cross multiply
    20,445.84x = 28,215.24 × 11,493.72
  4. Step 4: Simplify right side
    20,445.84x = 324,298,068.29
  5. Step 5: Solve for x
    x = 324,298,068.29/20,445.84
  6. Step 6: Final answer
    x = 15,861.32

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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.