Home / 12,629.40-18,941.81-6,392.13

Finding the Fourth Proportional to 12,629.40, 18,941.81 and 6,392.13

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Solution

The fourth proportional to 12,629.40, 18,941.81 and 6,392.13 is: 9,587.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.40 : 18,941.81 = 6,392.13 : x
  2. Step 2: Convert to fraction form
    12,629.40/18,941.81 = 6,392.13/x
  3. Step 3: Cross multiply
    12,629.40x = 18,941.81 × 6,392.13
  4. Step 4: Simplify right side
    12,629.40x = 121,078,479.99
  5. Step 5: Solve for x
    x = 121,078,479.99/12,629.40
  6. Step 6: Final answer
    x = 9,587.03

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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.