Home / 12,580.11-17,364.18-8,388.36

Finding the Fourth Proportional to 12,580.11, 17,364.18 and 8,388.36

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Solution

The fourth proportional to 12,580.11, 17,364.18 and 8,388.36 is: 11,578.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.11 : 17,364.18 = 8,388.36 : x
  2. Step 2: Convert to fraction form
    12,580.11/17,364.18 = 8,388.36/x
  3. Step 3: Cross multiply
    12,580.11x = 17,364.18 × 8,388.36
  4. Step 4: Simplify right side
    12,580.11x = 145,657,024.40
  5. Step 5: Solve for x
    x = 145,657,024.40/12,580.11
  6. Step 6: Final answer
    x = 11,578.36

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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.