Home / 12,909.12-19,358.70-4,587.60

Finding the Fourth Proportional to 12,909.12, 19,358.70 and 4,587.60

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Solution

The fourth proportional to 12,909.12, 19,358.70 and 4,587.60 is: 6,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.12 : 19,358.70 = 4,587.60 : x
  2. Step 2: Convert to fraction form
    12,909.12/19,358.70 = 4,587.60/x
  3. Step 3: Cross multiply
    12,909.12x = 19,358.70 × 4,587.60
  4. Step 4: Simplify right side
    12,909.12x = 88,809,972.12
  5. Step 5: Solve for x
    x = 88,809,972.12/12,909.12
  6. Step 6: Final answer
    x = 6,879.63

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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.