Home / 11,229.20-16,843.80-7,312.40

Finding the Fourth Proportional to 11,229.20, 16,843.80 and 7,312.40

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Solution

The fourth proportional to 11,229.20, 16,843.80 and 7,312.40 is: 10,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,229.20 : 16,843.80 = 7,312.40 : x
  2. Step 2: Convert to fraction form
    11,229.20/16,843.80 = 7,312.40/x
  3. Step 3: Cross multiply
    11,229.20x = 16,843.80 × 7,312.40
  4. Step 4: Simplify right side
    11,229.20x = 123,168,603.12
  5. Step 5: Solve for x
    x = 123,168,603.12/11,229.20
  6. Step 6: Final answer
    x = 10,968.60

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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.