Home / 30,162.30-45,261.09-12,630.66

Finding the Fourth Proportional to 30,162.30, 45,261.09 and 12,630.66

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Solution

The fourth proportional to 30,162.30, 45,261.09 and 12,630.66 is: 18,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,162.30 : 45,261.09 = 12,630.66 : x
  2. Step 2: Convert to fraction form
    30,162.30/45,261.09 = 12,630.66/x
  3. Step 3: Cross multiply
    30,162.30x = 45,261.09 × 12,630.66
  4. Step 4: Simplify right side
    30,162.30x = 571,677,439.02
  5. Step 5: Solve for x
    x = 571,677,439.02/30,162.30
  6. Step 6: Final answer
    x = 18,953.38

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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.