Home / 13,930.58-20,871.54-11,605.55

Finding the Fourth Proportional to 13,930.58, 20,871.54 and 11,605.55

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Solution

The fourth proportional to 13,930.58, 20,871.54 and 11,605.55 is: 17,388.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.58 : 20,871.54 = 11,605.55 : x
  2. Step 2: Convert to fraction form
    13,930.58/20,871.54 = 11,605.55/x
  3. Step 3: Cross multiply
    13,930.58x = 20,871.54 × 11,605.55
  4. Step 4: Simplify right side
    13,930.58x = 242,225,596.69
  5. Step 5: Solve for x
    x = 242,225,596.69/13,930.58
  6. Step 6: Final answer
    x = 17,388.05

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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.