Home / 13,419.45-18,519.48-7,754.95

Finding the Fourth Proportional to 13,419.45, 18,519.48 and 7,754.95

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Solution

The fourth proportional to 13,419.45, 18,519.48 and 7,754.95 is: 10,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.45 : 18,519.48 = 7,754.95 : x
  2. Step 2: Convert to fraction form
    13,419.45/18,519.48 = 7,754.95/x
  3. Step 3: Cross multiply
    13,419.45x = 18,519.48 × 7,754.95
  4. Step 4: Simplify right side
    13,419.45x = 143,617,566.05
  5. Step 5: Solve for x
    x = 143,617,566.05/13,419.45
  6. Step 6: Final answer
    x = 10,702.20

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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.