Home / 12,688.80-19,041.44-5,763.36

Finding the Fourth Proportional to 12,688.80, 19,041.44 and 5,763.36

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Solution

The fourth proportional to 12,688.80, 19,041.44 and 5,763.36 is: 8,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.80 : 19,041.44 = 5,763.36 : x
  2. Step 2: Convert to fraction form
    12,688.80/19,041.44 = 5,763.36/x
  3. Step 3: Cross multiply
    12,688.80x = 19,041.44 × 5,763.36
  4. Step 4: Simplify right side
    12,688.80x = 109,742,673.64
  5. Step 5: Solve for x
    x = 109,742,673.64/12,688.80
  6. Step 6: Final answer
    x = 8,648.78

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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.