Home / 13,120.12-19,641.18-13,102.84

Finding the Fourth Proportional to 13,120.12, 19,641.18 and 13,102.84

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Solution

The fourth proportional to 13,120.12, 19,641.18 and 13,102.84 is: 19,615.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.12 : 19,641.18 = 13,102.84 : x
  2. Step 2: Convert to fraction form
    13,120.12/19,641.18 = 13,102.84/x
  3. Step 3: Cross multiply
    13,120.12x = 19,641.18 × 13,102.84
  4. Step 4: Simplify right side
    13,120.12x = 257,355,238.95
  5. Step 5: Solve for x
    x = 257,355,238.95/13,120.12
  6. Step 6: Final answer
    x = 19,615.31

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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.