Home / 12,816.68-19,219.23-5,417.33

Finding the Fourth Proportional to 12,816.68, 19,219.23 and 5,417.33

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Solution

The fourth proportional to 12,816.68, 19,219.23 and 5,417.33 is: 8,123.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.68 : 19,219.23 = 5,417.33 : x
  2. Step 2: Convert to fraction form
    12,816.68/19,219.23 = 5,417.33/x
  3. Step 3: Cross multiply
    12,816.68x = 19,219.23 × 5,417.33
  4. Step 4: Simplify right side
    12,816.68x = 104,116,815.16
  5. Step 5: Solve for x
    x = 104,116,815.16/12,816.68
  6. Step 6: Final answer
    x = 8,123.54

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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.