Home / 19,885.68-27,440.57-11,385.86

Finding the Fourth Proportional to 19,885.68, 27,440.57 and 11,385.86

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Solution

The fourth proportional to 19,885.68, 27,440.57 and 11,385.86 is: 15,711.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.68 : 27,440.57 = 11,385.86 : x
  2. Step 2: Convert to fraction form
    19,885.68/27,440.57 = 11,385.86/x
  3. Step 3: Cross multiply
    19,885.68x = 27,440.57 × 11,385.86
  4. Step 4: Simplify right side
    19,885.68x = 312,434,294.21
  5. Step 5: Solve for x
    x = 312,434,294.21/19,885.68
  6. Step 6: Final answer
    x = 15,711.52

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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.