Home / 13,739.64-18,960.57-7,772.47

Finding the Fourth Proportional to 13,739.64, 18,960.57 and 7,772.47

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Solution

The fourth proportional to 13,739.64, 18,960.57 and 7,772.47 is: 10,725.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.64 : 18,960.57 = 7,772.47 : x
  2. Step 2: Convert to fraction form
    13,739.64/18,960.57 = 7,772.47/x
  3. Step 3: Cross multiply
    13,739.64x = 18,960.57 × 7,772.47
  4. Step 4: Simplify right side
    13,739.64x = 147,370,461.51
  5. Step 5: Solve for x
    x = 147,370,461.51/13,739.64
  6. Step 6: Final answer
    x = 10,725.94

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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.