Home / 12,887.61-19,333.85-4,120.17

Finding the Fourth Proportional to 12,887.61, 19,333.85 and 4,120.17

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Solution

The fourth proportional to 12,887.61, 19,333.85 and 4,120.17 is: 6,181.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.61 : 19,333.85 = 4,120.17 : x
  2. Step 2: Convert to fraction form
    12,887.61/19,333.85 = 4,120.17/x
  3. Step 3: Cross multiply
    12,887.61x = 19,333.85 × 4,120.17
  4. Step 4: Simplify right side
    12,887.61x = 79,658,728.15
  5. Step 5: Solve for x
    x = 79,658,728.15/12,887.61
  6. Step 6: Final answer
    x = 6,181.03

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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.