Home / 12,812.10-19,218.14-4,047.76

Finding the Fourth Proportional to 12,812.10, 19,218.14 and 4,047.76

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Solution

The fourth proportional to 12,812.10, 19,218.14 and 4,047.76 is: 6,071.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.10 : 19,218.14 = 4,047.76 : x
  2. Step 2: Convert to fraction form
    12,812.10/19,218.14 = 4,047.76/x
  3. Step 3: Cross multiply
    12,812.10x = 19,218.14 × 4,047.76
  4. Step 4: Simplify right side
    12,812.10x = 77,790,418.37
  5. Step 5: Solve for x
    x = 77,790,418.37/12,812.10
  6. Step 6: Final answer
    x = 6,071.64

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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.