Home / 13,965.35-19,271.04-8,221.89

Finding the Fourth Proportional to 13,965.35, 19,271.04 and 8,221.89

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Solution

The fourth proportional to 13,965.35, 19,271.04 and 8,221.89 is: 11,345.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.35 : 19,271.04 = 8,221.89 : x
  2. Step 2: Convert to fraction form
    13,965.35/19,271.04 = 8,221.89/x
  3. Step 3: Cross multiply
    13,965.35x = 19,271.04 × 8,221.89
  4. Step 4: Simplify right side
    13,965.35x = 158,444,412.50
  5. Step 5: Solve for x
    x = 158,444,412.50/13,965.35
  6. Step 6: Final answer
    x = 11,345.54

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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.