Home / 30,139.23-45,202.67-11,412.81

Finding the Fourth Proportional to 30,139.23, 45,202.67 and 11,412.81

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Solution

The fourth proportional to 30,139.23, 45,202.67 and 11,412.81 is: 17,116.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.23 : 45,202.67 = 11,412.81 : x
  2. Step 2: Convert to fraction form
    30,139.23/45,202.67 = 11,412.81/x
  3. Step 3: Cross multiply
    30,139.23x = 45,202.67 × 11,412.81
  4. Step 4: Simplify right side
    30,139.23x = 515,889,300.43
  5. Step 5: Solve for x
    x = 515,889,300.43/30,139.23
  6. Step 6: Final answer
    x = 17,116.87

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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.