Home / 12,639.42-18,959.81-4,847.63

Finding the Fourth Proportional to 12,639.42, 18,959.81 and 4,847.63

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Solution

The fourth proportional to 12,639.42, 18,959.81 and 4,847.63 is: 7,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.42 : 18,959.81 = 4,847.63 : x
  2. Step 2: Convert to fraction form
    12,639.42/18,959.81 = 4,847.63/x
  3. Step 3: Cross multiply
    12,639.42x = 18,959.81 × 4,847.63
  4. Step 4: Simplify right side
    12,639.42x = 91,910,024.71
  5. Step 5: Solve for x
    x = 91,910,024.71/12,639.42
  6. Step 6: Final answer
    x = 7,271.70

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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.