Home / 14,160.71-19,536.91-8,781.21

Finding the Fourth Proportional to 14,160.71, 19,536.91 and 8,781.21

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Solution

The fourth proportional to 14,160.71, 19,536.91 and 8,781.21 is: 12,115.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,160.71 : 19,536.91 = 8,781.21 : x
  2. Step 2: Convert to fraction form
    14,160.71/19,536.91 = 8,781.21/x
  3. Step 3: Cross multiply
    14,160.71x = 19,536.91 × 8,781.21
  4. Step 4: Simplify right side
    14,160.71x = 171,557,780.26
  5. Step 5: Solve for x
    x = 171,557,780.26/14,160.71
  6. Step 6: Final answer
    x = 12,115.05

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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.