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Finding the Fourth Proportional to 29,294, 40,428.90 and 19,230.56

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Solution

The fourth proportional to 29,294, 40,428.90 and 19,230.56 is: 26,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,294 : 40,428.90 = 19,230.56 : x
  2. Step 2: Convert to fraction form
    29,294/40,428.90 = 19,230.56/x
  3. Step 3: Cross multiply
    29,294x = 40,428.90 × 19,230.56
  4. Step 4: Simplify right side
    29,294x = 777,470,387.18
  5. Step 5: Solve for x
    x = 777,470,387.18/29,294
  6. Step 6: Final answer
    x = 26,540.26

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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.