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Finding the Fourth Proportional to 12,661.66, 18,993.30 and 4,870.47

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Solution

The fourth proportional to 12,661.66, 18,993.30 and 4,870.47 is: 7,306.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.66 : 18,993.30 = 4,870.47 : x
  2. Step 2: Convert to fraction form
    12,661.66/18,993.30 = 4,870.47/x
  3. Step 3: Cross multiply
    12,661.66x = 18,993.30 × 4,870.47
  4. Step 4: Simplify right side
    12,661.66x = 92,506,297.85
  5. Step 5: Solve for x
    x = 92,506,297.85/12,661.66
  6. Step 6: Final answer
    x = 7,306.02

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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.