Home / 30,386.20-45,559.51-12,611.96

Finding the Fourth Proportional to 30,386.20, 45,559.51 and 12,611.96

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Solution

The fourth proportional to 30,386.20, 45,559.51 and 12,611.96 is: 18,909.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386.20 : 45,559.51 = 12,611.96 : x
  2. Step 2: Convert to fraction form
    30,386.20/45,559.51 = 12,611.96/x
  3. Step 3: Cross multiply
    30,386.20x = 45,559.51 × 12,611.96
  4. Step 4: Simplify right side
    30,386.20x = 574,594,717.74
  5. Step 5: Solve for x
    x = 574,594,717.74/30,386.20
  6. Step 6: Final answer
    x = 18,909.73

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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.