Home / 13,911.60-19,198.06-7,538.20

Finding the Fourth Proportional to 13,911.60, 19,198.06 and 7,538.20

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Solution

The fourth proportional to 13,911.60, 19,198.06 and 7,538.20 is: 10,402.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.60 : 19,198.06 = 7,538.20 : x
  2. Step 2: Convert to fraction form
    13,911.60/19,198.06 = 7,538.20/x
  3. Step 3: Cross multiply
    13,911.60x = 19,198.06 × 7,538.20
  4. Step 4: Simplify right side
    13,911.60x = 144,718,872.45
  5. Step 5: Solve for x
    x = 144,718,872.45/13,911.60
  6. Step 6: Final answer
    x = 10,402.75

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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.