Home / 12,990.16-19,446.36-8,363.44

Finding the Fourth Proportional to 12,990.16, 19,446.36 and 8,363.44

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Solution

The fourth proportional to 12,990.16, 19,446.36 and 8,363.44 is: 12,520.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.16 : 19,446.36 = 8,363.44 : x
  2. Step 2: Convert to fraction form
    12,990.16/19,446.36 = 8,363.44/x
  3. Step 3: Cross multiply
    12,990.16x = 19,446.36 × 8,363.44
  4. Step 4: Simplify right side
    12,990.16x = 162,638,465.08
  5. Step 5: Solve for x
    x = 162,638,465.08/12,990.16
  6. Step 6: Final answer
    x = 12,520.13

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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.