Home / 13,292.48-19,938.74-12,480.56

Finding the Fourth Proportional to 13,292.48, 19,938.74 and 12,480.56

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Solution

The fourth proportional to 13,292.48, 19,938.74 and 12,480.56 is: 18,720.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.48 : 19,938.74 = 12,480.56 : x
  2. Step 2: Convert to fraction form
    13,292.48/19,938.74 = 12,480.56/x
  3. Step 3: Cross multiply
    13,292.48x = 19,938.74 × 12,480.56
  4. Step 4: Simplify right side
    13,292.48x = 248,846,572.40
  5. Step 5: Solve for x
    x = 248,846,572.40/13,292.48
  6. Step 6: Final answer
    x = 18,720.86

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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.