Home / 19,657.68-27,136.79-12,588.13

Finding the Fourth Proportional to 19,657.68, 27,136.79 and 12,588.13

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Solution

The fourth proportional to 19,657.68, 27,136.79 and 12,588.13 is: 17,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.68 : 27,136.79 = 12,588.13 : x
  2. Step 2: Convert to fraction form
    19,657.68/27,136.79 = 12,588.13/x
  3. Step 3: Cross multiply
    19,657.68x = 27,136.79 × 12,588.13
  4. Step 4: Simplify right side
    19,657.68x = 341,601,440.30
  5. Step 5: Solve for x
    x = 341,601,440.30/19,657.68
  6. Step 6: Final answer
    x = 17,377.51

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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.