Home / 13,292.29-19,938.45-12,480.36

Finding the Fourth Proportional to 13,292.29, 19,938.45 and 12,480.36

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Solution

The fourth proportional to 13,292.29, 19,938.45 and 12,480.36 is: 18,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.29 : 19,938.45 = 12,480.36 : x
  2. Step 2: Convert to fraction form
    13,292.29/19,938.45 = 12,480.36/x
  3. Step 3: Cross multiply
    13,292.29x = 19,938.45 × 12,480.36
  4. Step 4: Simplify right side
    13,292.29x = 248,839,033.84
  5. Step 5: Solve for x
    x = 248,839,033.84/13,292.29
  6. Step 6: Final answer
    x = 18,720.55

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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.