Home / 29,430.78-40,618.17-18,816.54

Finding the Fourth Proportional to 29,430.78, 40,618.17 and 18,816.54

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Solution

The fourth proportional to 29,430.78, 40,618.17 and 18,816.54 is: 25,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,430.78 : 40,618.17 = 18,816.54 : x
  2. Step 2: Convert to fraction form
    29,430.78/40,618.17 = 18,816.54/x
  3. Step 3: Cross multiply
    29,430.78x = 40,618.17 × 18,816.54
  4. Step 4: Simplify right side
    29,430.78x = 764,293,420.53
  5. Step 5: Solve for x
    x = 764,293,420.53/29,430.78
  6. Step 6: Final answer
    x = 25,969.19

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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.