Home / 30,231.28-45,271.50-19,104.40

Finding the Fourth Proportional to 30,231.28, 45,271.50 and 19,104.40

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Solution

The fourth proportional to 30,231.28, 45,271.50 and 19,104.40 is: 28,608.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.28 : 45,271.50 = 19,104.40 : x
  2. Step 2: Convert to fraction form
    30,231.28/45,271.50 = 19,104.40/x
  3. Step 3: Cross multiply
    30,231.28x = 45,271.50 × 19,104.40
  4. Step 4: Simplify right side
    30,231.28x = 864,884,844.60
  5. Step 5: Solve for x
    x = 864,884,844.60/30,231.28
  6. Step 6: Final answer
    x = 28,608.94

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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.