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Finding the Fourth Proportional to 21,361.67, 29,492.96 and 19,119.65

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Solution

The fourth proportional to 21,361.67, 29,492.96 and 19,119.65 is: 26,397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.67 : 29,492.96 = 19,119.65 : x
  2. Step 2: Convert to fraction form
    21,361.67/29,492.96 = 19,119.65/x
  3. Step 3: Cross multiply
    21,361.67x = 29,492.96 × 19,119.65
  4. Step 4: Simplify right side
    21,361.67x = 563,894,829.60
  5. Step 5: Solve for x
    x = 563,894,829.60/21,361.67
  6. Step 6: Final answer
    x = 26,397.51

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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.