Home / 21,838.08-30,136.48-11,902.08

Finding the Fourth Proportional to 21,838.08, 30,136.48 and 11,902.08

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Solution

The fourth proportional to 21,838.08, 30,136.48 and 11,902.08 is: 16,424.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.08 : 30,136.48 = 11,902.08 : x
  2. Step 2: Convert to fraction form
    21,838.08/30,136.48 = 11,902.08/x
  3. Step 3: Cross multiply
    21,838.08x = 30,136.48 × 11,902.08
  4. Step 4: Simplify right side
    21,838.08x = 358,686,795.88
  5. Step 5: Solve for x
    x = 358,686,795.88/21,838.08
  6. Step 6: Final answer
    x = 16,424.83

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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.