Home / 30,342.96-45,520.56-12,812.76

Finding the Fourth Proportional to 30,342.96, 45,520.56 and 12,812.76

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Solution

The fourth proportional to 30,342.96, 45,520.56 and 12,812.76 is: 19,221.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342.96 : 45,520.56 = 12,812.76 : x
  2. Step 2: Convert to fraction form
    30,342.96/45,520.56 = 12,812.76/x
  3. Step 3: Cross multiply
    30,342.96x = 45,520.56 × 12,812.76
  4. Step 4: Simplify right side
    30,342.96x = 583,244,010.35
  5. Step 5: Solve for x
    x = 583,244,010.35/30,342.96
  6. Step 6: Final answer
    x = 19,221.72

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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.