Home / 30,272.13-45,408.20-12,730.77

Finding the Fourth Proportional to 30,272.13, 45,408.20 and 12,730.77

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Solution

The fourth proportional to 30,272.13, 45,408.20 and 12,730.77 is: 19,096.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,272.13 : 45,408.20 = 12,730.77 : x
  2. Step 2: Convert to fraction form
    30,272.13/45,408.20 = 12,730.77/x
  3. Step 3: Cross multiply
    30,272.13x = 45,408.20 × 12,730.77
  4. Step 4: Simplify right side
    30,272.13x = 578,081,286.66
  5. Step 5: Solve for x
    x = 578,081,286.66/30,272.13
  6. Step 6: Final answer
    x = 19,096.16

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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.