Home / 13,158.36-19,718.04-8,215.68

Finding the Fourth Proportional to 13,158.36, 19,718.04 and 8,215.68

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Solution

The fourth proportional to 13,158.36, 19,718.04 and 8,215.68 is: 12,311.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.36 : 19,718.04 = 8,215.68 : x
  2. Step 2: Convert to fraction form
    13,158.36/19,718.04 = 8,215.68/x
  3. Step 3: Cross multiply
    13,158.36x = 19,718.04 × 8,215.68
  4. Step 4: Simplify right side
    13,158.36x = 161,997,106.87
  5. Step 5: Solve for x
    x = 161,997,106.87/13,158.36
  6. Step 6: Final answer
    x = 12,311.34

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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.