Home / 11,316.58-16,981.44-4,742.20

Finding the Fourth Proportional to 11,316.58, 16,981.44 and 4,742.20

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Solution

The fourth proportional to 11,316.58, 16,981.44 and 4,742.20 is: 7,116.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.58 : 16,981.44 = 4,742.20 : x
  2. Step 2: Convert to fraction form
    11,316.58/16,981.44 = 4,742.20/x
  3. Step 3: Cross multiply
    11,316.58x = 16,981.44 × 4,742.20
  4. Step 4: Simplify right side
    11,316.58x = 80,529,384.77
  5. Step 5: Solve for x
    x = 80,529,384.77/11,316.58
  6. Step 6: Final answer
    x = 7,116.05

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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.