Home / 12,291.84-18,430.32-4,491.48

Finding the Fourth Proportional to 12,291.84, 18,430.32 and 4,491.48

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Solution

The fourth proportional to 12,291.84, 18,430.32 and 4,491.48 is: 6,734.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.84 : 18,430.32 = 4,491.48 : x
  2. Step 2: Convert to fraction form
    12,291.84/18,430.32 = 4,491.48/x
  3. Step 3: Cross multiply
    12,291.84x = 18,430.32 × 4,491.48
  4. Step 4: Simplify right side
    12,291.84x = 82,779,413.67
  5. Step 5: Solve for x
    x = 82,779,413.67/12,291.84
  6. Step 6: Final answer
    x = 6,734.50

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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.