Home / 19,663.91-27,136.84-11,166.40

Finding the Fourth Proportional to 19,663.91, 27,136.84 and 11,166.40

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Solution

The fourth proportional to 19,663.91, 27,136.84 and 11,166.40 is: 15,409.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.91 : 27,136.84 = 11,166.40 : x
  2. Step 2: Convert to fraction form
    19,663.91/27,136.84 = 11,166.40/x
  3. Step 3: Cross multiply
    19,663.91x = 27,136.84 × 11,166.40
  4. Step 4: Simplify right side
    19,663.91x = 303,020,674.49
  5. Step 5: Solve for x
    x = 303,020,674.49/19,663.91
  6. Step 6: Final answer
    x = 15,409.99

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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.