Home / 13,125.49-19,699.61-6,889.91

Finding the Fourth Proportional to 13,125.49, 19,699.61 and 6,889.91

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Solution

The fourth proportional to 13,125.49, 19,699.61 and 6,889.91 is: 10,340.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.49 : 19,699.61 = 6,889.91 : x
  2. Step 2: Convert to fraction form
    13,125.49/19,699.61 = 6,889.91/x
  3. Step 3: Cross multiply
    13,125.49x = 19,699.61 × 6,889.91
  4. Step 4: Simplify right side
    13,125.49x = 135,728,539.94
  5. Step 5: Solve for x
    x = 135,728,539.94/13,125.49
  6. Step 6: Final answer
    x = 10,340.84

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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.