Home / 13,688.03-18,900.99-9,226.55

Finding the Fourth Proportional to 13,688.03, 18,900.99 and 9,226.55

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Solution

The fourth proportional to 13,688.03, 18,900.99 and 9,226.55 is: 12,740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.03 : 18,900.99 = 9,226.55 : x
  2. Step 2: Convert to fraction form
    13,688.03/18,900.99 = 9,226.55/x
  3. Step 3: Cross multiply
    13,688.03x = 18,900.99 × 9,226.55
  4. Step 4: Simplify right side
    13,688.03x = 174,390,788.65
  5. Step 5: Solve for x
    x = 174,390,788.65/13,688.03
  6. Step 6: Final answer
    x = 12,740.39

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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.