Home / 30,114.28-45,138.80-13,451.37

Finding the Fourth Proportional to 30,114.28, 45,138.80 and 13,451.37

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Solution

The fourth proportional to 30,114.28, 45,138.80 and 13,451.37 is: 20,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,114.28 : 45,138.80 = 13,451.37 : x
  2. Step 2: Convert to fraction form
    30,114.28/45,138.80 = 13,451.37/x
  3. Step 3: Cross multiply
    30,114.28x = 45,138.80 × 13,451.37
  4. Step 4: Simplify right side
    30,114.28x = 607,178,564.51
  5. Step 5: Solve for x
    x = 607,178,564.51/30,114.28
  6. Step 6: Final answer
    x = 20,162.48

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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.