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Finding the Fourth Proportional to 29,689.40, 44,484.60 and 20,908.64

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Solution

The fourth proportional to 29,689.40, 44,484.60 and 20,908.64 is: 31,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,689.40 : 44,484.60 = 20,908.64 : x
  2. Step 2: Convert to fraction form
    29,689.40/44,484.60 = 20,908.64/x
  3. Step 3: Cross multiply
    29,689.40x = 44,484.60 × 20,908.64
  4. Step 4: Simplify right side
    29,689.40x = 930,112,486.94
  5. Step 5: Solve for x
    x = 930,112,486.94/29,689.40
  6. Step 6: Final answer
    x = 31,328.10

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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.