Home / 12,629.86-18,946.85-5,612.29

Finding the Fourth Proportional to 12,629.86, 18,946.85 and 5,612.29

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Solution

The fourth proportional to 12,629.86, 18,946.85 and 5,612.29 is: 8,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.86 : 18,946.85 = 5,612.29 : x
  2. Step 2: Convert to fraction form
    12,629.86/18,946.85 = 5,612.29/x
  3. Step 3: Cross multiply
    12,629.86x = 18,946.85 × 5,612.29
  4. Step 4: Simplify right side
    12,629.86x = 106,335,141.36
  5. Step 5: Solve for x
    x = 106,335,141.36/12,629.86
  6. Step 6: Final answer
    x = 8,419.35

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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.