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Finding the Fourth Proportional to 29,980.36, 44,994.03 and 20,915.52

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Solution

The fourth proportional to 29,980.36, 44,994.03 and 20,915.52 is: 31,389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,980.36 : 44,994.03 = 20,915.52 : x
  2. Step 2: Convert to fraction form
    29,980.36/44,994.03 = 20,915.52/x
  3. Step 3: Cross multiply
    29,980.36x = 44,994.03 × 20,915.52
  4. Step 4: Simplify right side
    29,980.36x = 941,073,534.35
  5. Step 5: Solve for x
    x = 941,073,534.35/29,980.36
  6. Step 6: Final answer
    x = 31,389.67

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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.