Home / 8,719.88-13,055.50-6,661.64

Finding the Fourth Proportional to 8,719.88, 13,055.50 and 6,661.64

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Solution

The fourth proportional to 8,719.88, 13,055.50 and 6,661.64 is: 9,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.88 : 13,055.50 = 6,661.64 : x
  2. Step 2: Convert to fraction form
    8,719.88/13,055.50 = 6,661.64/x
  3. Step 3: Cross multiply
    8,719.88x = 13,055.50 × 6,661.64
  4. Step 4: Simplify right side
    8,719.88x = 86,971,041.02
  5. Step 5: Solve for x
    x = 86,971,041.02/8,719.88
  6. Step 6: Final answer
    x = 9,973.88

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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.