Home / 13,293.54-18,347.04-7,991.28

Finding the Fourth Proportional to 13,293.54, 18,347.04 and 7,991.28

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Solution

The fourth proportional to 13,293.54, 18,347.04 and 7,991.28 is: 11,029.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,293.54 : 18,347.04 = 7,991.28 : x
  2. Step 2: Convert to fraction form
    13,293.54/18,347.04 = 7,991.28/x
  3. Step 3: Cross multiply
    13,293.54x = 18,347.04 × 7,991.28
  4. Step 4: Simplify right side
    13,293.54x = 146,616,333.81
  5. Step 5: Solve for x
    x = 146,616,333.81/13,293.54
  6. Step 6: Final answer
    x = 11,029.14

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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.