Home / 19,672.57-27,147.81-10,720.15

Finding the Fourth Proportional to 19,672.57, 27,147.81 and 10,720.15

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Solution

The fourth proportional to 19,672.57, 27,147.81 and 10,720.15 is: 14,793.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.57 : 27,147.81 = 10,720.15 : x
  2. Step 2: Convert to fraction form
    19,672.57/27,147.81 = 10,720.15/x
  3. Step 3: Cross multiply
    19,672.57x = 27,147.81 × 10,720.15
  4. Step 4: Simplify right side
    19,672.57x = 291,028,595.37
  5. Step 5: Solve for x
    x = 291,028,595.37/19,672.57
  6. Step 6: Final answer
    x = 14,793.62

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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.