Home / 19,727.55-27,195.70-12,168.78

Finding the Fourth Proportional to 19,727.55, 27,195.70 and 12,168.78

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Solution

The fourth proportional to 19,727.55, 27,195.70 and 12,168.78 is: 16,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,727.55 : 27,195.70 = 12,168.78 : x
  2. Step 2: Convert to fraction form
    19,727.55/27,195.70 = 12,168.78/x
  3. Step 3: Cross multiply
    19,727.55x = 27,195.70 × 12,168.78
  4. Step 4: Simplify right side
    19,727.55x = 330,938,533.63
  5. Step 5: Solve for x
    x = 330,938,533.63/19,727.55
  6. Step 6: Final answer
    x = 16,775.45

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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.