Home / 30,146.96-45,214.27-11,420.54

Finding the Fourth Proportional to 30,146.96, 45,214.27 and 11,420.54

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Solution

The fourth proportional to 30,146.96, 45,214.27 and 11,420.54 is: 17,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,146.96 : 45,214.27 = 11,420.54 : x
  2. Step 2: Convert to fraction form
    30,146.96/45,214.27 = 11,420.54/x
  3. Step 3: Cross multiply
    30,146.96x = 45,214.27 × 11,420.54
  4. Step 4: Simplify right side
    30,146.96x = 516,371,379.11
  5. Step 5: Solve for x
    x = 516,371,379.11/30,146.96
  6. Step 6: Final answer
    x = 17,128.47

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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.