Home / 12,699.28-19,061.34-6,868.36

Finding the Fourth Proportional to 12,699.28, 19,061.34 and 6,868.36

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Solution

The fourth proportional to 12,699.28, 19,061.34 and 6,868.36 is: 10,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.28 : 19,061.34 = 6,868.36 : x
  2. Step 2: Convert to fraction form
    12,699.28/19,061.34 = 6,868.36/x
  3. Step 3: Cross multiply
    12,699.28x = 19,061.34 × 6,868.36
  4. Step 4: Simplify right side
    12,699.28x = 130,920,145.20
  5. Step 5: Solve for x
    x = 130,920,145.20/12,699.28
  6. Step 6: Final answer
    x = 10,309.26

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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.