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Finding the Fourth Proportional to 35,397.78, 48,852.09 and 20,295.78

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Solution

The fourth proportional to 35,397.78, 48,852.09 and 20,295.78 is: 28,009.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,397.78 : 48,852.09 = 20,295.78 : x
  2. Step 2: Convert to fraction form
    35,397.78/48,852.09 = 20,295.78/x
  3. Step 3: Cross multiply
    35,397.78x = 48,852.09 × 20,295.78
  4. Step 4: Simplify right side
    35,397.78x = 991,491,271.18
  5. Step 5: Solve for x
    x = 991,491,271.18/35,397.78
  6. Step 6: Final answer
    x = 28,009.98

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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.