Home / 19,855.05-27,397.95-11,897.07

Finding the Fourth Proportional to 19,855.05, 27,397.95 and 11,897.07

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Solution

The fourth proportional to 19,855.05, 27,397.95 and 11,897.07 is: 16,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.05 : 27,397.95 = 11,897.07 : x
  2. Step 2: Convert to fraction form
    19,855.05/27,397.95 = 11,897.07/x
  3. Step 3: Cross multiply
    19,855.05x = 27,397.95 × 11,897.07
  4. Step 4: Simplify right side
    19,855.05x = 325,955,329.01
  5. Step 5: Solve for x
    x = 325,955,329.01/19,855.05
  6. Step 6: Final answer
    x = 16,416.75

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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.