Home / 12,876.16-19,316.64-4,113.28

Finding the Fourth Proportional to 12,876.16, 19,316.64 and 4,113.28

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Solution

The fourth proportional to 12,876.16, 19,316.64 and 4,113.28 is: 6,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.16 : 19,316.64 = 4,113.28 : x
  2. Step 2: Convert to fraction form
    12,876.16/19,316.64 = 4,113.28/x
  3. Step 3: Cross multiply
    12,876.16x = 19,316.64 × 4,113.28
  4. Step 4: Simplify right side
    12,876.16x = 79,454,748.98
  5. Step 5: Solve for x
    x = 79,454,748.98/12,876.16
  6. Step 6: Final answer
    x = 6,170.69

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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.