Home / 12,486.72-17,208-8,943.84

Finding the Fourth Proportional to 12,486.72, 17,208 and 8,943.84

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Solution

The fourth proportional to 12,486.72, 17,208 and 8,943.84 is: 12,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.72 : 17,208 = 8,943.84 : x
  2. Step 2: Convert to fraction form
    12,486.72/17,208 = 8,943.84/x
  3. Step 3: Cross multiply
    12,486.72x = 17,208 × 8,943.84
  4. Step 4: Simplify right side
    12,486.72x = 153,905,598.72
  5. Step 5: Solve for x
    x = 153,905,598.72/12,486.72
  6. Step 6: Final answer
    x = 12,325.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.