Home / 13,822.50-19,081.86-9,576.78

Finding the Fourth Proportional to 13,822.50, 19,081.86 and 9,576.78

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Solution

The fourth proportional to 13,822.50, 19,081.86 and 9,576.78 is: 13,220.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,822.50 : 19,081.86 = 9,576.78 : x
  2. Step 2: Convert to fraction form
    13,822.50/19,081.86 = 9,576.78/x
  3. Step 3: Cross multiply
    13,822.50x = 19,081.86 × 9,576.78
  4. Step 4: Simplify right side
    13,822.50x = 182,742,775.21
  5. Step 5: Solve for x
    x = 182,742,775.21/13,822.50
  6. Step 6: Final answer
    x = 13,220.67

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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.