Home / 12,570.51-18,855.77-3,210.20

Finding the Fourth Proportional to 12,570.51, 18,855.77 and 3,210.20

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Solution

The fourth proportional to 12,570.51, 18,855.77 and 3,210.20 is: 4,815.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.51 : 18,855.77 = 3,210.20 : x
  2. Step 2: Convert to fraction form
    12,570.51/18,855.77 = 3,210.20/x
  3. Step 3: Cross multiply
    12,570.51x = 18,855.77 × 3,210.20
  4. Step 4: Simplify right side
    12,570.51x = 60,530,682.52
  5. Step 5: Solve for x
    x = 60,530,682.52/12,570.51
  6. Step 6: Final answer
    x = 4,815.29

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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.