Home / 19,985.84-27,581.32-11,487.84

Finding the Fourth Proportional to 19,985.84, 27,581.32 and 11,487.84

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Solution

The fourth proportional to 19,985.84, 27,581.32 and 11,487.84 is: 15,853.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.84 : 27,581.32 = 11,487.84 : x
  2. Step 2: Convert to fraction form
    19,985.84/27,581.32 = 11,487.84/x
  3. Step 3: Cross multiply
    19,985.84x = 27,581.32 × 11,487.84
  4. Step 4: Simplify right side
    19,985.84x = 316,849,791.15
  5. Step 5: Solve for x
    x = 316,849,791.15/19,985.84
  6. Step 6: Final answer
    x = 15,853.71

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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.