Home / 13,174.72-19,684.75-12,715.36

Finding the Fourth Proportional to 13,174.72, 19,684.75 and 12,715.36

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Solution

The fourth proportional to 13,174.72, 19,684.75 and 12,715.36 is: 18,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.72 : 19,684.75 = 12,715.36 : x
  2. Step 2: Convert to fraction form
    13,174.72/19,684.75 = 12,715.36/x
  3. Step 3: Cross multiply
    13,174.72x = 19,684.75 × 12,715.36
  4. Step 4: Simplify right side
    13,174.72x = 250,298,619.18
  5. Step 5: Solve for x
    x = 250,298,619.18/13,174.72
  6. Step 6: Final answer
    x = 18,998.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.