Home / 21,865.05-32,789.48-9,213.93

Finding the Fourth Proportional to 21,865.05, 32,789.48 and 9,213.93

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Solution

The fourth proportional to 21,865.05, 32,789.48 and 9,213.93 is: 13,817.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.05 : 32,789.48 = 9,213.93 : x
  2. Step 2: Convert to fraction form
    21,865.05/32,789.48 = 9,213.93/x
  3. Step 3: Cross multiply
    21,865.05x = 32,789.48 × 9,213.93
  4. Step 4: Simplify right side
    21,865.05x = 302,119,927.39
  5. Step 5: Solve for x
    x = 302,119,927.39/21,865.05
  6. Step 6: Final answer
    x = 13,817.48

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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.