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Finding the Fourth Proportional to 12,477.61, 18,710.96 and 4,680.95

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Solution

The fourth proportional to 12,477.61, 18,710.96 and 4,680.95 is: 7,019.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.61 : 18,710.96 = 4,680.95 : x
  2. Step 2: Convert to fraction form
    12,477.61/18,710.96 = 4,680.95/x
  3. Step 3: Cross multiply
    12,477.61x = 18,710.96 × 4,680.95
  4. Step 4: Simplify right side
    12,477.61x = 87,585,091.58
  5. Step 5: Solve for x
    x = 87,585,091.58/12,477.61
  6. Step 6: Final answer
    x = 7,019.38

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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.