Home / 13,824.07-20,740.59-6,428.36

Finding the Fourth Proportional to 13,824.07, 20,740.59 and 6,428.36

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Solution

The fourth proportional to 13,824.07, 20,740.59 and 6,428.36 is: 9,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.07 : 20,740.59 = 6,428.36 : x
  2. Step 2: Convert to fraction form
    13,824.07/20,740.59 = 6,428.36/x
  3. Step 3: Cross multiply
    13,824.07x = 20,740.59 × 6,428.36
  4. Step 4: Simplify right side
    13,824.07x = 133,328,030.98
  5. Step 5: Solve for x
    x = 133,328,030.98/13,824.07
  6. Step 6: Final answer
    x = 9,644.63

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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.