Home / 13,219.46-18,246.05-8,977.60

Finding the Fourth Proportional to 13,219.46, 18,246.05 and 8,977.60

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Solution

The fourth proportional to 13,219.46, 18,246.05 and 8,977.60 is: 12,391.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.46 : 18,246.05 = 8,977.60 : x
  2. Step 2: Convert to fraction form
    13,219.46/18,246.05 = 8,977.60/x
  3. Step 3: Cross multiply
    13,219.46x = 18,246.05 × 8,977.60
  4. Step 4: Simplify right side
    13,219.46x = 163,805,738.48
  5. Step 5: Solve for x
    x = 163,805,738.48/13,219.46
  6. Step 6: Final answer
    x = 12,391.26

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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.