Home / 18,545.74-25,579.16-12,880.50

Finding the Fourth Proportional to 18,545.74, 25,579.16 and 12,880.50

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Solution

The fourth proportional to 18,545.74, 25,579.16 and 12,880.50 is: 17,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,545.74 : 25,579.16 = 12,880.50 : x
  2. Step 2: Convert to fraction form
    18,545.74/25,579.16 = 12,880.50/x
  3. Step 3: Cross multiply
    18,545.74x = 25,579.16 × 12,880.50
  4. Step 4: Simplify right side
    18,545.74x = 329,472,258.36
  5. Step 5: Solve for x
    x = 329,472,258.36/18,545.74
  6. Step 6: Final answer
    x = 17,765.39

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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.