Home / 12,645.81-18,964.62-4,210.07

Finding the Fourth Proportional to 12,645.81, 18,964.62 and 4,210.07

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Solution

The fourth proportional to 12,645.81, 18,964.62 and 4,210.07 is: 6,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.81 : 18,964.62 = 4,210.07 : x
  2. Step 2: Convert to fraction form
    12,645.81/18,964.62 = 4,210.07/x
  3. Step 3: Cross multiply
    12,645.81x = 18,964.62 × 4,210.07
  4. Step 4: Simplify right side
    12,645.81x = 79,842,282.90
  5. Step 5: Solve for x
    x = 79,842,282.90/12,645.81
  6. Step 6: Final answer
    x = 6,313.73

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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.