Home / 30,119.60-45,182.28-12,587.60

Finding the Fourth Proportional to 30,119.60, 45,182.28 and 12,587.60

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Solution

The fourth proportional to 30,119.60, 45,182.28 and 12,587.60 is: 18,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.60 : 45,182.28 = 12,587.60 : x
  2. Step 2: Convert to fraction form
    30,119.60/45,182.28 = 12,587.60/x
  3. Step 3: Cross multiply
    30,119.60x = 45,182.28 × 12,587.60
  4. Step 4: Simplify right side
    30,119.60x = 568,736,467.73
  5. Step 5: Solve for x
    x = 568,736,467.73/30,119.60
  6. Step 6: Final answer
    x = 18,882.60

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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.