Home / 12,316.34-18,477.75-3,551.78

Finding the Fourth Proportional to 12,316.34, 18,477.75 and 3,551.78

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Solution

The fourth proportional to 12,316.34, 18,477.75 and 3,551.78 is: 5,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,316.34 : 18,477.75 = 3,551.78 : x
  2. Step 2: Convert to fraction form
    12,316.34/18,477.75 = 3,551.78/x
  3. Step 3: Cross multiply
    12,316.34x = 18,477.75 × 3,551.78
  4. Step 4: Simplify right side
    12,316.34x = 65,628,902.90
  5. Step 5: Solve for x
    x = 65,628,902.90/12,316.34
  6. Step 6: Final answer
    x = 5,328.60

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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.