Home / 13,697.57-18,902.70-7,409.95

Finding the Fourth Proportional to 13,697.57, 18,902.70 and 7,409.95

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Solution

The fourth proportional to 13,697.57, 18,902.70 and 7,409.95 is: 10,225.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.57 : 18,902.70 = 7,409.95 : x
  2. Step 2: Convert to fraction form
    13,697.57/18,902.70 = 7,409.95/x
  3. Step 3: Cross multiply
    13,697.57x = 18,902.70 × 7,409.95
  4. Step 4: Simplify right side
    13,697.57x = 140,067,930.30
  5. Step 5: Solve for x
    x = 140,067,930.30/13,697.57
  6. Step 6: Final answer
    x = 10,225.75

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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.