Home / 13,875.20-19,150.25-8,213.10

Finding the Fourth Proportional to 13,875.20, 19,150.25 and 8,213.10

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Solution

The fourth proportional to 13,875.20, 19,150.25 and 8,213.10 is: 11,335.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.20 : 19,150.25 = 8,213.10 : x
  2. Step 2: Convert to fraction form
    13,875.20/19,150.25 = 8,213.10/x
  3. Step 3: Cross multiply
    13,875.20x = 19,150.25 × 8,213.10
  4. Step 4: Simplify right side
    13,875.20x = 157,282,828.50
  5. Step 5: Solve for x
    x = 157,282,828.50/13,875.20
  6. Step 6: Final answer
    x = 11,335.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.