Home / 13,292.85-19,939.31-12,480.93

Finding the Fourth Proportional to 13,292.85, 19,939.31 and 12,480.93

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Solution

The fourth proportional to 13,292.85, 19,939.31 and 12,480.93 is: 18,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.85 : 19,939.31 = 12,480.93 : x
  2. Step 2: Convert to fraction form
    13,292.85/19,939.31 = 12,480.93/x
  3. Step 3: Cross multiply
    13,292.85x = 19,939.31 × 12,480.93
  4. Step 4: Simplify right side
    13,292.85x = 248,861,132.36
  5. Step 5: Solve for x
    x = 248,861,132.36/13,292.85
  6. Step 6: Final answer
    x = 18,721.43

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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.