Home / 15,685.68-21,614.98-11,196.80

Finding the Fourth Proportional to 15,685.68, 21,614.98 and 11,196.80

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Solution

The fourth proportional to 15,685.68, 21,614.98 and 11,196.80 is: 15,429.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685.68 : 21,614.98 = 11,196.80 : x
  2. Step 2: Convert to fraction form
    15,685.68/21,614.98 = 11,196.80/x
  3. Step 3: Cross multiply
    15,685.68x = 21,614.98 × 11,196.80
  4. Step 4: Simplify right side
    15,685.68x = 242,018,608.06
  5. Step 5: Solve for x
    x = 242,018,608.06/15,685.68
  6. Step 6: Final answer
    x = 15,429.27

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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.