Home / 19,938.53-29,907.90-5,146.43

Finding the Fourth Proportional to 19,938.53, 29,907.90 and 5,146.43

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Solution

The fourth proportional to 19,938.53, 29,907.90 and 5,146.43 is: 7,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.53 : 29,907.90 = 5,146.43 : x
  2. Step 2: Convert to fraction form
    19,938.53/29,907.90 = 5,146.43/x
  3. Step 3: Cross multiply
    19,938.53x = 29,907.90 × 5,146.43
  4. Step 4: Simplify right side
    19,938.53x = 153,918,913.80
  5. Step 5: Solve for x
    x = 153,918,913.80/19,938.53
  6. Step 6: Final answer
    x = 7,719.67

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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.