Home / 13,102.40-19,643.22-12,209.75

Finding the Fourth Proportional to 13,102.40, 19,643.22 and 12,209.75

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Solution

The fourth proportional to 13,102.40, 19,643.22 and 12,209.75 is: 18,304.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.40 : 19,643.22 = 12,209.75 : x
  2. Step 2: Convert to fraction form
    13,102.40/19,643.22 = 12,209.75/x
  3. Step 3: Cross multiply
    13,102.40x = 19,643.22 × 12,209.75
  4. Step 4: Simplify right side
    13,102.40x = 239,838,707.18
  5. Step 5: Solve for x
    x = 239,838,707.18/13,102.40
  6. Step 6: Final answer
    x = 18,304.95

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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.