Home / 30,132.42-45,181.68-12,358.18

Finding the Fourth Proportional to 30,132.42, 45,181.68 and 12,358.18

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Solution

The fourth proportional to 30,132.42, 45,181.68 and 12,358.18 is: 18,530.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,132.42 : 45,181.68 = 12,358.18 : x
  2. Step 2: Convert to fraction form
    30,132.42/45,181.68 = 12,358.18/x
  3. Step 3: Cross multiply
    30,132.42x = 45,181.68 × 12,358.18
  4. Step 4: Simplify right side
    30,132.42x = 558,363,334.14
  5. Step 5: Solve for x
    x = 558,363,334.14/30,132.42
  6. Step 6: Final answer
    x = 18,530.32

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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.