Home / 12,742.64-19,116.62-6,421.07

Finding the Fourth Proportional to 12,742.64, 19,116.62 and 6,421.07

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Solution

The fourth proportional to 12,742.64, 19,116.62 and 6,421.07 is: 9,632.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.64 : 19,116.62 = 6,421.07 : x
  2. Step 2: Convert to fraction form
    12,742.64/19,116.62 = 6,421.07/x
  3. Step 3: Cross multiply
    12,742.64x = 19,116.62 × 6,421.07
  4. Step 4: Simplify right side
    12,742.64x = 122,749,163.03
  5. Step 5: Solve for x
    x = 122,749,163.03/12,742.64
  6. Step 6: Final answer
    x = 9,632.95

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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.