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Finding the Fourth Proportional to 30,873.60, 42,602.40 and 17,443.80

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Solution

The fourth proportional to 30,873.60, 42,602.40 and 17,443.80 is: 24,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873.60 : 42,602.40 = 17,443.80 : x
  2. Step 2: Convert to fraction form
    30,873.60/42,602.40 = 17,443.80/x
  3. Step 3: Cross multiply
    30,873.60x = 42,602.40 × 17,443.80
  4. Step 4: Simplify right side
    30,873.60x = 743,147,745.12
  5. Step 5: Solve for x
    x = 743,147,745.12/30,873.60
  6. Step 6: Final answer
    x = 24,070.65

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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.