Home / 15,509.80-23,271.90-8,122.60

Finding the Fourth Proportional to 15,509.80, 23,271.90 and 8,122.60

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Solution

The fourth proportional to 15,509.80, 23,271.90 and 8,122.60 is: 12,187.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.80 : 23,271.90 = 8,122.60 : x
  2. Step 2: Convert to fraction form
    15,509.80/23,271.90 = 8,122.60/x
  3. Step 3: Cross multiply
    15,509.80x = 23,271.90 × 8,122.60
  4. Step 4: Simplify right side
    15,509.80x = 189,028,334.94
  5. Step 5: Solve for x
    x = 189,028,334.94/15,509.80
  6. Step 6: Final answer
    x = 12,187.67

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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.