Home / 10,518.84-15,778.20-4,277.64

Finding the Fourth Proportional to 10,518.84, 15,778.20 and 4,277.64

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Solution

The fourth proportional to 10,518.84, 15,778.20 and 4,277.64 is: 6,416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.84 : 15,778.20 = 4,277.64 : x
  2. Step 2: Convert to fraction form
    10,518.84/15,778.20 = 4,277.64/x
  3. Step 3: Cross multiply
    10,518.84x = 15,778.20 × 4,277.64
  4. Step 4: Simplify right side
    10,518.84x = 67,493,459.45
  5. Step 5: Solve for x
    x = 67,493,459.45/10,518.84
  6. Step 6: Final answer
    x = 6,416.44

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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.