Home / 13,222.15-19,828.08-6,643.75

Finding the Fourth Proportional to 13,222.15, 19,828.08 and 6,643.75

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Solution

The fourth proportional to 13,222.15, 19,828.08 and 6,643.75 is: 9,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.15 : 19,828.08 = 6,643.75 : x
  2. Step 2: Convert to fraction form
    13,222.15/19,828.08 = 6,643.75/x
  3. Step 3: Cross multiply
    13,222.15x = 19,828.08 × 6,643.75
  4. Step 4: Simplify right side
    13,222.15x = 131,732,806.50
  5. Step 5: Solve for x
    x = 131,732,806.50/13,222.15
  6. Step 6: Final answer
    x = 9,963.04

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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.