Home / 30,002.22-45,002.78-8,956.55

Finding the Fourth Proportional to 30,002.22, 45,002.78 and 8,956.55

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Solution

The fourth proportional to 30,002.22, 45,002.78 and 8,956.55 is: 13,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,002.22 : 45,002.78 = 8,956.55 : x
  2. Step 2: Convert to fraction form
    30,002.22/45,002.78 = 8,956.55/x
  3. Step 3: Cross multiply
    30,002.22x = 45,002.78 × 8,956.55
  4. Step 4: Simplify right side
    30,002.22x = 403,069,379.41
  5. Step 5: Solve for x
    x = 403,069,379.41/30,002.22
  6. Step 6: Final answer
    x = 13,434.65

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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.