Home / 12,821.47-19,266.84-12,099.76

Finding the Fourth Proportional to 12,821.47, 19,266.84 and 12,099.76

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Solution

The fourth proportional to 12,821.47, 19,266.84 and 12,099.76 is: 18,182.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.47 : 19,266.84 = 12,099.76 : x
  2. Step 2: Convert to fraction form
    12,821.47/19,266.84 = 12,099.76/x
  3. Step 3: Cross multiply
    12,821.47x = 19,266.84 × 12,099.76
  4. Step 4: Simplify right side
    12,821.47x = 233,124,139.96
  5. Step 5: Solve for x
    x = 233,124,139.96/12,821.47
  6. Step 6: Final answer
    x = 18,182.33

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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.