Home / 12,176.91-18,258.38-4,772.70

Finding the Fourth Proportional to 12,176.91, 18,258.38 and 4,772.70

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Solution

The fourth proportional to 12,176.91, 18,258.38 and 4,772.70 is: 7,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,176.91 : 18,258.38 = 4,772.70 : x
  2. Step 2: Convert to fraction form
    12,176.91/18,258.38 = 4,772.70/x
  3. Step 3: Cross multiply
    12,176.91x = 18,258.38 × 4,772.70
  4. Step 4: Simplify right side
    12,176.91x = 87,141,746.36
  5. Step 5: Solve for x
    x = 87,141,746.36/12,176.91
  6. Step 6: Final answer
    x = 7,156.31

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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.