Home / 13,708.51-18,918.26-7,740.83

Finding the Fourth Proportional to 13,708.51, 18,918.26 and 7,740.83

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Solution

The fourth proportional to 13,708.51, 18,918.26 and 7,740.83 is: 10,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.51 : 18,918.26 = 7,740.83 : x
  2. Step 2: Convert to fraction form
    13,708.51/18,918.26 = 7,740.83/x
  3. Step 3: Cross multiply
    13,708.51x = 18,918.26 × 7,740.83
  4. Step 4: Simplify right side
    13,708.51x = 146,443,072.18
  5. Step 5: Solve for x
    x = 146,443,072.18/13,708.51
  6. Step 6: Final answer
    x = 10,682.64

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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.