Home / 12,979.92-19,461.36-6,410.40

Finding the Fourth Proportional to 12,979.92, 19,461.36 and 6,410.40

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Solution

The fourth proportional to 12,979.92, 19,461.36 and 6,410.40 is: 9,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.92 : 19,461.36 = 6,410.40 : x
  2. Step 2: Convert to fraction form
    12,979.92/19,461.36 = 6,410.40/x
  3. Step 3: Cross multiply
    12,979.92x = 19,461.36 × 6,410.40
  4. Step 4: Simplify right side
    12,979.92x = 124,755,102.14
  5. Step 5: Solve for x
    x = 124,755,102.14/12,979.92
  6. Step 6: Final answer
    x = 9,611.39

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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.