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Finding the Fourth Proportional to 30,683.70, 46,025.55 and 9,907.20

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Solution

The fourth proportional to 30,683.70, 46,025.55 and 9,907.20 is: 14,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,683.70 : 46,025.55 = 9,907.20 : x
  2. Step 2: Convert to fraction form
    30,683.70/46,025.55 = 9,907.20/x
  3. Step 3: Cross multiply
    30,683.70x = 46,025.55 × 9,907.20
  4. Step 4: Simplify right side
    30,683.70x = 455,984,328.96
  5. Step 5: Solve for x
    x = 455,984,328.96/30,683.70
  6. Step 6: Final answer
    x = 14,860.80

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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.