Home / 13,211.10-19,815.71-4,889.57

Finding the Fourth Proportional to 13,211.10, 19,815.71 and 4,889.57

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Solution

The fourth proportional to 13,211.10, 19,815.71 and 4,889.57 is: 7,334.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.10 : 19,815.71 = 4,889.57 : x
  2. Step 2: Convert to fraction form
    13,211.10/19,815.71 = 4,889.57/x
  3. Step 3: Cross multiply
    13,211.10x = 19,815.71 × 4,889.57
  4. Step 4: Simplify right side
    13,211.10x = 96,890,177.62
  5. Step 5: Solve for x
    x = 96,890,177.62/13,211.10
  6. Step 6: Final answer
    x = 7,334.00

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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.