Home / 21,578.40-32,358.96-7,719.84

Finding the Fourth Proportional to 21,578.40, 32,358.96 and 7,719.84

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Solution

The fourth proportional to 21,578.40, 32,358.96 and 7,719.84 is: 11,576.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,578.40 : 32,358.96 = 7,719.84 : x
  2. Step 2: Convert to fraction form
    21,578.40/32,358.96 = 7,719.84/x
  3. Step 3: Cross multiply
    21,578.40x = 32,358.96 × 7,719.84
  4. Step 4: Simplify right side
    21,578.40x = 249,805,993.77
  5. Step 5: Solve for x
    x = 249,805,993.77/21,578.40
  6. Step 6: Final answer
    x = 11,576.67

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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.