Home / 19,709.85-27,205.62-12,158.53

Finding the Fourth Proportional to 19,709.85, 27,205.62 and 12,158.53

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Solution

The fourth proportional to 19,709.85, 27,205.62 and 12,158.53 is: 16,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.85 : 27,205.62 = 12,158.53 : x
  2. Step 2: Convert to fraction form
    19,709.85/27,205.62 = 12,158.53/x
  3. Step 3: Cross multiply
    19,709.85x = 27,205.62 × 12,158.53
  4. Step 4: Simplify right side
    19,709.85x = 330,780,346.94
  5. Step 5: Solve for x
    x = 330,780,346.94/19,709.85
  6. Step 6: Final answer
    x = 16,782.49

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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.