Home / 11,540.50-17,312.25-4,145.78

Finding the Fourth Proportional to 11,540.50, 17,312.25 and 4,145.78

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Solution

The fourth proportional to 11,540.50, 17,312.25 and 4,145.78 is: 6,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,540.50 : 17,312.25 = 4,145.78 : x
  2. Step 2: Convert to fraction form
    11,540.50/17,312.25 = 4,145.78/x
  3. Step 3: Cross multiply
    11,540.50x = 17,312.25 × 4,145.78
  4. Step 4: Simplify right side
    11,540.50x = 71,772,779.81
  5. Step 5: Solve for x
    x = 71,772,779.81/11,540.50
  6. Step 6: Final answer
    x = 6,219.21

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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.