Home / 20,215.98-30,303.45-7,732.80

Finding the Fourth Proportional to 20,215.98, 30,303.45 and 7,732.80

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Solution

The fourth proportional to 20,215.98, 30,303.45 and 7,732.80 is: 11,591.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.98 : 30,303.45 = 7,732.80 : x
  2. Step 2: Convert to fraction form
    20,215.98/30,303.45 = 7,732.80/x
  3. Step 3: Cross multiply
    20,215.98x = 30,303.45 × 7,732.80
  4. Step 4: Simplify right side
    20,215.98x = 234,330,518.16
  5. Step 5: Solve for x
    x = 234,330,518.16/20,215.98
  6. Step 6: Final answer
    x = 11,591.35

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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.