Home / 13,572.30-20,401.65-12,794.70

Finding the Fourth Proportional to 13,572.30, 20,401.65 and 12,794.70

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Solution

The fourth proportional to 13,572.30, 20,401.65 and 12,794.70 is: 19,232.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.30 : 20,401.65 = 12,794.70 : x
  2. Step 2: Convert to fraction form
    13,572.30/20,401.65 = 12,794.70/x
  3. Step 3: Cross multiply
    13,572.30x = 20,401.65 × 12,794.70
  4. Step 4: Simplify right side
    13,572.30x = 261,032,991.26
  5. Step 5: Solve for x
    x = 261,032,991.26/13,572.30
  6. Step 6: Final answer
    x = 19,232.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.