Home / 15,014.85-20,720.18-8,300.76

Finding the Fourth Proportional to 15,014.85, 20,720.18 and 8,300.76

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Solution

The fourth proportional to 15,014.85, 20,720.18 and 8,300.76 is: 11,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.85 : 20,720.18 = 8,300.76 : x
  2. Step 2: Convert to fraction form
    15,014.85/20,720.18 = 8,300.76/x
  3. Step 3: Cross multiply
    15,014.85x = 20,720.18 × 8,300.76
  4. Step 4: Simplify right side
    15,014.85x = 171,993,184.39
  5. Step 5: Solve for x
    x = 171,993,184.39/15,014.85
  6. Step 6: Final answer
    x = 11,454.87

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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.