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Finding the Fourth Proportional to 30,246.60, 45,369.90 and 16,905.90

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Solution

The fourth proportional to 30,246.60, 45,369.90 and 16,905.90 is: 25,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,246.60 : 45,369.90 = 16,905.90 : x
  2. Step 2: Convert to fraction form
    30,246.60/45,369.90 = 16,905.90/x
  3. Step 3: Cross multiply
    30,246.60x = 45,369.90 × 16,905.90
  4. Step 4: Simplify right side
    30,246.60x = 767,018,992.41
  5. Step 5: Solve for x
    x = 767,018,992.41/30,246.60
  6. Step 6: Final answer
    x = 25,358.85

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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.