Home / 11,119.20-16,678.80-10,274.40

Finding the Fourth Proportional to 11,119.20, 16,678.80 and 10,274.40

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Solution

The fourth proportional to 11,119.20, 16,678.80 and 10,274.40 is: 15,411.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.20 : 16,678.80 = 10,274.40 : x
  2. Step 2: Convert to fraction form
    11,119.20/16,678.80 = 10,274.40/x
  3. Step 3: Cross multiply
    11,119.20x = 16,678.80 × 10,274.40
  4. Step 4: Simplify right side
    11,119.20x = 171,364,662.72
  5. Step 5: Solve for x
    x = 171,364,662.72/11,119.20
  6. Step 6: Final answer
    x = 15,411.60

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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.