Home / 30,990.25-46,466.88-12,272.98

Finding the Fourth Proportional to 30,990.25, 46,466.88 and 12,272.98

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Solution

The fourth proportional to 30,990.25, 46,466.88 and 12,272.98 is: 18,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.25 : 46,466.88 = 12,272.98 : x
  2. Step 2: Convert to fraction form
    30,990.25/46,466.88 = 12,272.98/x
  3. Step 3: Cross multiply
    30,990.25x = 46,466.88 × 12,272.98
  4. Step 4: Simplify right side
    30,990.25x = 570,287,088.90
  5. Step 5: Solve for x
    x = 570,287,088.90/30,990.25
  6. Step 6: Final answer
    x = 18,402.15

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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.