Home / 13,779.87-20,664.95-6,382.95

Finding the Fourth Proportional to 13,779.87, 20,664.95 and 6,382.95

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Solution

The fourth proportional to 13,779.87, 20,664.95 and 6,382.95 is: 9,572.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.87 : 20,664.95 = 6,382.95 : x
  2. Step 2: Convert to fraction form
    13,779.87/20,664.95 = 6,382.95/x
  3. Step 3: Cross multiply
    13,779.87x = 20,664.95 × 6,382.95
  4. Step 4: Simplify right side
    13,779.87x = 131,903,310.69
  5. Step 5: Solve for x
    x = 131,903,310.69/13,779.87
  6. Step 6: Final answer
    x = 9,572.17

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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.