Home / 13,695.05-20,538.45-7,117.64

Finding the Fourth Proportional to 13,695.05, 20,538.45 and 7,117.64

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Solution

The fourth proportional to 13,695.05, 20,538.45 and 7,117.64 is: 10,674.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.05 : 20,538.45 = 7,117.64 : x
  2. Step 2: Convert to fraction form
    13,695.05/20,538.45 = 7,117.64/x
  3. Step 3: Cross multiply
    13,695.05x = 20,538.45 × 7,117.64
  4. Step 4: Simplify right side
    13,695.05x = 146,185,190.57
  5. Step 5: Solve for x
    x = 146,185,190.57/13,695.05
  6. Step 6: Final answer
    x = 10,674.31

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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.