Home / 18,712.36-25,811.58-12,746.71

Finding the Fourth Proportional to 18,712.36, 25,811.58 and 12,746.71

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Solution

The fourth proportional to 18,712.36, 25,811.58 and 12,746.71 is: 17,582.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.36 : 25,811.58 = 12,746.71 : x
  2. Step 2: Convert to fraction form
    18,712.36/25,811.58 = 12,746.71/x
  3. Step 3: Cross multiply
    18,712.36x = 25,811.58 × 12,746.71
  4. Step 4: Simplify right side
    18,712.36x = 329,012,660.37
  5. Step 5: Solve for x
    x = 329,012,660.37/18,712.36
  6. Step 6: Final answer
    x = 17,582.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.