Home / 20,271.22-30,410.07-7,124.02

Finding the Fourth Proportional to 20,271.22, 30,410.07 and 7,124.02

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Solution

The fourth proportional to 20,271.22, 30,410.07 and 7,124.02 is: 10,687.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.22 : 30,410.07 = 7,124.02 : x
  2. Step 2: Convert to fraction form
    20,271.22/30,410.07 = 7,124.02/x
  3. Step 3: Cross multiply
    20,271.22x = 30,410.07 × 7,124.02
  4. Step 4: Simplify right side
    20,271.22x = 216,641,946.88
  5. Step 5: Solve for x
    x = 216,641,946.88/20,271.22
  6. Step 6: Final answer
    x = 10,687.17

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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.