Home / 11,836.40-16,336.50-7,122.20

Finding the Fourth Proportional to 11,836.40, 16,336.50 and 7,122.20

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Solution

The fourth proportional to 11,836.40, 16,336.50 and 7,122.20 is: 9,830.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,836.40 : 16,336.50 = 7,122.20 : x
  2. Step 2: Convert to fraction form
    11,836.40/16,336.50 = 7,122.20/x
  3. Step 3: Cross multiply
    11,836.40x = 16,336.50 × 7,122.20
  4. Step 4: Simplify right side
    11,836.40x = 116,351,820.30
  5. Step 5: Solve for x
    x = 116,351,820.30/11,836.40
  6. Step 6: Final answer
    x = 9,830.00

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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.