Home / 12,570.21-18,855.31-3,210.23

Finding the Fourth Proportional to 12,570.21, 18,855.31 and 3,210.23

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Solution

The fourth proportional to 12,570.21, 18,855.31 and 3,210.23 is: 4,815.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.21 : 18,855.31 = 3,210.23 : x
  2. Step 2: Convert to fraction form
    12,570.21/18,855.31 = 3,210.23/x
  3. Step 3: Cross multiply
    12,570.21x = 18,855.31 × 3,210.23
  4. Step 4: Simplify right side
    12,570.21x = 60,529,920.93
  5. Step 5: Solve for x
    x = 60,529,920.93/12,570.21
  6. Step 6: Final answer
    x = 4,815.35

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Similar ratio
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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.