Home / 13,068.88-18,025.52-8,290.28

Finding the Fourth Proportional to 13,068.88, 18,025.52 and 8,290.28

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Solution

The fourth proportional to 13,068.88, 18,025.52 and 8,290.28 is: 11,434.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,068.88 : 18,025.52 = 8,290.28 : x
  2. Step 2: Convert to fraction form
    13,068.88/18,025.52 = 8,290.28/x
  3. Step 3: Cross multiply
    13,068.88x = 18,025.52 × 8,290.28
  4. Step 4: Simplify right side
    13,068.88x = 149,436,607.95
  5. Step 5: Solve for x
    x = 149,436,607.95/13,068.88
  6. Step 6: Final answer
    x = 11,434.54

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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.