Home / 13,014.20-19,472.70-8,640.20

Finding the Fourth Proportional to 13,014.20, 19,472.70 and 8,640.20

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Solution

The fourth proportional to 13,014.20, 19,472.70 and 8,640.20 is: 12,928.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,014.20 : 19,472.70 = 8,640.20 : x
  2. Step 2: Convert to fraction form
    13,014.20/19,472.70 = 8,640.20/x
  3. Step 3: Cross multiply
    13,014.20x = 19,472.70 × 8,640.20
  4. Step 4: Simplify right side
    13,014.20x = 168,248,022.54
  5. Step 5: Solve for x
    x = 168,248,022.54/13,014.20
  6. Step 6: Final answer
    x = 12,928.03

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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.