Home / 14,187.58-19,578.68-7,814.04

Finding the Fourth Proportional to 14,187.58, 19,578.68 and 7,814.04

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Solution

The fourth proportional to 14,187.58, 19,578.68 and 7,814.04 is: 10,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.58 : 19,578.68 = 7,814.04 : x
  2. Step 2: Convert to fraction form
    14,187.58/19,578.68 = 7,814.04/x
  3. Step 3: Cross multiply
    14,187.58x = 19,578.68 × 7,814.04
  4. Step 4: Simplify right side
    14,187.58x = 152,988,615.61
  5. Step 5: Solve for x
    x = 152,988,615.61/14,187.58
  6. Step 6: Final answer
    x = 10,783.28

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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.