Home / 13,699.12-18,904.80-8,665.52

Finding the Fourth Proportional to 13,699.12, 18,904.80 and 8,665.52

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Solution

The fourth proportional to 13,699.12, 18,904.80 and 8,665.52 is: 11,958.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.12 : 18,904.80 = 8,665.52 : x
  2. Step 2: Convert to fraction form
    13,699.12/18,904.80 = 8,665.52/x
  3. Step 3: Cross multiply
    13,699.12x = 18,904.80 × 8,665.52
  4. Step 4: Simplify right side
    13,699.12x = 163,819,922.50
  5. Step 5: Solve for x
    x = 163,819,922.50/13,699.12
  6. Step 6: Final answer
    x = 11,958.43

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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.