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Finding the Fourth Proportional to 12,954.40, 17,835.60 and 10,880.80

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Solution

The fourth proportional to 12,954.40, 17,835.60 and 10,880.80 is: 14,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.40 : 17,835.60 = 10,880.80 : x
  2. Step 2: Convert to fraction form
    12,954.40/17,835.60 = 10,880.80/x
  3. Step 3: Cross multiply
    12,954.40x = 17,835.60 × 10,880.80
  4. Step 4: Simplify right side
    12,954.40x = 194,065,596.48
  5. Step 5: Solve for x
    x = 194,065,596.48/12,954.40
  6. Step 6: Final answer
    x = 14,980.67

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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.