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Finding the Fourth Proportional to 35,394.70, 48,846.72 and 20,289.88

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Solution

The fourth proportional to 35,394.70, 48,846.72 and 20,289.88 is: 28,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,394.70 : 48,846.72 = 20,289.88 : x
  2. Step 2: Convert to fraction form
    35,394.70/48,846.72 = 20,289.88/x
  3. Step 3: Cross multiply
    35,394.70x = 48,846.72 × 20,289.88
  4. Step 4: Simplify right side
    35,394.70x = 991,094,087.19
  5. Step 5: Solve for x
    x = 991,094,087.19/35,394.70
  6. Step 6: Final answer
    x = 28,001.20

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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.