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Finding the Fourth Proportional to 29,812.40, 44,719.96 and 21,086.28

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Solution

The fourth proportional to 29,812.40, 44,719.96 and 21,086.28 is: 31,630.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,812.40 : 44,719.96 = 21,086.28 : x
  2. Step 2: Convert to fraction form
    29,812.40/44,719.96 = 21,086.28/x
  3. Step 3: Cross multiply
    29,812.40x = 44,719.96 × 21,086.28
  4. Step 4: Simplify right side
    29,812.40x = 942,977,598.15
  5. Step 5: Solve for x
    x = 942,977,598.15/29,812.40
  6. Step 6: Final answer
    x = 31,630.38

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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.