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Finding the Fourth Proportional to 10,820.77, 16,219.02 and 7,079.74

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Solution

The fourth proportional to 10,820.77, 16,219.02 and 7,079.74 is: 10,611.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,820.77 : 16,219.02 = 7,079.74 : x
  2. Step 2: Convert to fraction form
    10,820.77/16,219.02 = 7,079.74/x
  3. Step 3: Cross multiply
    10,820.77x = 16,219.02 × 7,079.74
  4. Step 4: Simplify right side
    10,820.77x = 114,826,430.66
  5. Step 5: Solve for x
    x = 114,826,430.66/10,820.77
  6. Step 6: Final answer
    x = 10,611.67

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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.