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Finding the Fourth Proportional to 19,938.96, 29,892.60 and 13,683.60

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Solution

The fourth proportional to 19,938.96, 29,892.60 and 13,683.60 is: 20,514.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.96 : 29,892.60 = 13,683.60 : x
  2. Step 2: Convert to fraction form
    19,938.96/29,892.60 = 13,683.60/x
  3. Step 3: Cross multiply
    19,938.96x = 29,892.60 × 13,683.60
  4. Step 4: Simplify right side
    19,938.96x = 409,038,381.36
  5. Step 5: Solve for x
    x = 409,038,381.36/19,938.96
  6. Step 6: Final answer
    x = 20,514.53

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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.