Home / 13,815.40-19,066.62-7,847.44

Finding the Fourth Proportional to 13,815.40, 19,066.62 and 7,847.44

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Solution

The fourth proportional to 13,815.40, 19,066.62 and 7,847.44 is: 10,830.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.40 : 19,066.62 = 7,847.44 : x
  2. Step 2: Convert to fraction form
    13,815.40/19,066.62 = 7,847.44/x
  3. Step 3: Cross multiply
    13,815.40x = 19,066.62 × 7,847.44
  4. Step 4: Simplify right side
    13,815.40x = 149,624,156.45
  5. Step 5: Solve for x
    x = 149,624,156.45/13,815.40
  6. Step 6: Final answer
    x = 10,830.24

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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.