Home / 30,119.36-45,172.62-19,011.20

Finding the Fourth Proportional to 30,119.36, 45,172.62 and 19,011.20

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Solution

The fourth proportional to 30,119.36, 45,172.62 and 19,011.20 is: 28,512.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.36 : 45,172.62 = 19,011.20 : x
  2. Step 2: Convert to fraction form
    30,119.36/45,172.62 = 19,011.20/x
  3. Step 3: Cross multiply
    30,119.36x = 45,172.62 × 19,011.20
  4. Step 4: Simplify right side
    30,119.36x = 858,785,487.48
  5. Step 5: Solve for x
    x = 858,785,487.48/30,119.36
  6. Step 6: Final answer
    x = 28,512.74

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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.