Home / 13,749.97-20,631.59-7,509.81

Finding the Fourth Proportional to 13,749.97, 20,631.59 and 7,509.81

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Solution

The fourth proportional to 13,749.97, 20,631.59 and 7,509.81 is: 11,268.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.97 : 20,631.59 = 7,509.81 : x
  2. Step 2: Convert to fraction form
    13,749.97/20,631.59 = 7,509.81/x
  3. Step 3: Cross multiply
    13,749.97x = 20,631.59 × 7,509.81
  4. Step 4: Simplify right side
    13,749.97x = 154,939,405.62
  5. Step 5: Solve for x
    x = 154,939,405.62/13,749.97
  6. Step 6: Final answer
    x = 11,268.34

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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.