Home / 30,153.81-45,224.56-11,427.39

Finding the Fourth Proportional to 30,153.81, 45,224.56 and 11,427.39

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Solution

The fourth proportional to 30,153.81, 45,224.56 and 11,427.39 is: 17,138.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,153.81 : 45,224.56 = 11,427.39 : x
  2. Step 2: Convert to fraction form
    30,153.81/45,224.56 = 11,427.39/x
  3. Step 3: Cross multiply
    30,153.81x = 45,224.56 × 11,427.39
  4. Step 4: Simplify right side
    30,153.81x = 516,798,684.70
  5. Step 5: Solve for x
    x = 516,798,684.70/30,153.81
  6. Step 6: Final answer
    x = 17,138.75

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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.