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Finding the Fourth Proportional to 12,602.74, 18,894.84 and 4,280.52

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Solution

The fourth proportional to 12,602.74, 18,894.84 and 4,280.52 is: 6,417.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.74 : 18,894.84 = 4,280.52 : x
  2. Step 2: Convert to fraction form
    12,602.74/18,894.84 = 4,280.52/x
  3. Step 3: Cross multiply
    12,602.74x = 18,894.84 × 4,280.52
  4. Step 4: Simplify right side
    12,602.74x = 80,879,740.52
  5. Step 5: Solve for x
    x = 80,879,740.52/12,602.74
  6. Step 6: Final answer
    x = 6,417.63

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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.