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Finding the Fourth Proportional to 30,659.90, 45,965.55 and 16,808.90

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Solution

The fourth proportional to 30,659.90, 45,965.55 and 16,808.90 is: 25,200.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,659.90 : 45,965.55 = 16,808.90 : x
  2. Step 2: Convert to fraction form
    30,659.90/45,965.55 = 16,808.90/x
  3. Step 3: Cross multiply
    30,659.90x = 45,965.55 × 16,808.90
  4. Step 4: Simplify right side
    30,659.90x = 772,630,333.40
  5. Step 5: Solve for x
    x = 772,630,333.40/30,659.90
  6. Step 6: Final answer
    x = 25,200.03

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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.