Home / 21,838.48-30,136.93-12,407.04

Finding the Fourth Proportional to 21,838.48, 30,136.93 and 12,407.04

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Solution

The fourth proportional to 21,838.48, 30,136.93 and 12,407.04 is: 17,121.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.48 : 30,136.93 = 12,407.04 : x
  2. Step 2: Convert to fraction form
    21,838.48/30,136.93 = 12,407.04/x
  3. Step 3: Cross multiply
    21,838.48x = 30,136.93 × 12,407.04
  4. Step 4: Simplify right side
    21,838.48x = 373,910,064.97
  5. Step 5: Solve for x
    x = 373,910,064.97/21,838.48
  6. Step 6: Final answer
    x = 17,121.62

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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.