Home / 13,868.32-19,138.31-7,580.70

Finding the Fourth Proportional to 13,868.32, 19,138.31 and 7,580.70

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Solution

The fourth proportional to 13,868.32, 19,138.31 and 7,580.70 is: 10,461.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.32 : 19,138.31 = 7,580.70 : x
  2. Step 2: Convert to fraction form
    13,868.32/19,138.31 = 7,580.70/x
  3. Step 3: Cross multiply
    13,868.32x = 19,138.31 × 7,580.70
  4. Step 4: Simplify right side
    13,868.32x = 145,081,786.62
  5. Step 5: Solve for x
    x = 145,081,786.62/13,868.32
  6. Step 6: Final answer
    x = 10,461.38

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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.