Home / 15,412.83-21,269.66-8,698.43

Finding the Fourth Proportional to 15,412.83, 21,269.66 and 8,698.43

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Solution

The fourth proportional to 15,412.83, 21,269.66 and 8,698.43 is: 12,003.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.83 : 21,269.66 = 8,698.43 : x
  2. Step 2: Convert to fraction form
    15,412.83/21,269.66 = 8,698.43/x
  3. Step 3: Cross multiply
    15,412.83x = 21,269.66 × 8,698.43
  4. Step 4: Simplify right side
    15,412.83x = 185,012,658.32
  5. Step 5: Solve for x
    x = 185,012,658.32/15,412.83
  6. Step 6: Final answer
    x = 12,003.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.