Home / 30,202.05-45,303.45-9,142.23

Finding the Fourth Proportional to 30,202.05, 45,303.45 and 9,142.23

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Solution

The fourth proportional to 30,202.05, 45,303.45 and 9,142.23 is: 13,713.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,202.05 : 45,303.45 = 9,142.23 : x
  2. Step 2: Convert to fraction form
    30,202.05/45,303.45 = 9,142.23/x
  3. Step 3: Cross multiply
    30,202.05x = 45,303.45 × 9,142.23
  4. Step 4: Simplify right side
    30,202.05x = 414,174,559.69
  5. Step 5: Solve for x
    x = 414,174,559.69/30,202.05
  6. Step 6: Final answer
    x = 13,713.46

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Double scale
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Similar ratio
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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.