Home / 30,221.22-45,285.66-12,681.48

Finding the Fourth Proportional to 30,221.22, 45,285.66 and 12,681.48

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Solution

The fourth proportional to 30,221.22, 45,285.66 and 12,681.48 is: 19,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.22 : 45,285.66 = 12,681.48 : x
  2. Step 2: Convert to fraction form
    30,221.22/45,285.66 = 12,681.48/x
  3. Step 3: Cross multiply
    30,221.22x = 45,285.66 × 12,681.48
  4. Step 4: Simplify right side
    30,221.22x = 574,289,191.58
  5. Step 5: Solve for x
    x = 574,289,191.58/30,221.22
  6. Step 6: Final answer
    x = 19,002.85

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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.