Home / 12,876.21-19,318.37-5,476.86

Finding the Fourth Proportional to 12,876.21, 19,318.37 and 5,476.86

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Solution

The fourth proportional to 12,876.21, 19,318.37 and 5,476.86 is: 8,217.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.21 : 19,318.37 = 5,476.86 : x
  2. Step 2: Convert to fraction form
    12,876.21/19,318.37 = 5,476.86/x
  3. Step 3: Cross multiply
    12,876.21x = 19,318.37 × 5,476.86
  4. Step 4: Simplify right side
    12,876.21x = 105,803,980.53
  5. Step 5: Solve for x
    x = 105,803,980.53/12,876.21
  6. Step 6: Final answer
    x = 8,217.01

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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.