Home / 13,181.76-19,775.52-5,391.36

Finding the Fourth Proportional to 13,181.76, 19,775.52 and 5,391.36

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Solution

The fourth proportional to 13,181.76, 19,775.52 and 5,391.36 is: 8,088.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.76 : 19,775.52 = 5,391.36 : x
  2. Step 2: Convert to fraction form
    13,181.76/19,775.52 = 5,391.36/x
  3. Step 3: Cross multiply
    13,181.76x = 19,775.52 × 5,391.36
  4. Step 4: Simplify right side
    13,181.76x = 106,616,947.51
  5. Step 5: Solve for x
    x = 106,616,947.51/13,181.76
  6. Step 6: Final answer
    x = 8,088.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.