Home / 30,612.03-45,920.58-8,427.21

Finding the Fourth Proportional to 30,612.03, 45,920.58 and 8,427.21

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Solution

The fourth proportional to 30,612.03, 45,920.58 and 8,427.21 is: 12,641.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.03 : 45,920.58 = 8,427.21 : x
  2. Step 2: Convert to fraction form
    30,612.03/45,920.58 = 8,427.21/x
  3. Step 3: Cross multiply
    30,612.03x = 45,920.58 × 8,427.21
  4. Step 4: Simplify right side
    30,612.03x = 386,982,370.98
  5. Step 5: Solve for x
    x = 386,982,370.98/30,612.03
  6. Step 6: Final answer
    x = 12,641.51

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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.