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Finding the Fourth Proportional to 35,494.88, 48,985.44 and 20,390.08

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Solution

The fourth proportional to 35,494.88, 48,985.44 and 20,390.08 is: 28,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,494.88 : 48,985.44 = 20,390.08 : x
  2. Step 2: Convert to fraction form
    35,494.88/48,985.44 = 20,390.08/x
  3. Step 3: Cross multiply
    35,494.88x = 48,985.44 × 20,390.08
  4. Step 4: Simplify right side
    35,494.88x = 998,817,040.44
  5. Step 5: Solve for x
    x = 998,817,040.44/35,494.88
  6. Step 6: Final answer
    x = 28,139.75

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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.