Home / 14,911.67-20,578.15-8,538.36

Finding the Fourth Proportional to 14,911.67, 20,578.15 and 8,538.36

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Solution

The fourth proportional to 14,911.67, 20,578.15 and 8,538.36 is: 11,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,911.67 : 20,578.15 = 8,538.36 : x
  2. Step 2: Convert to fraction form
    14,911.67/20,578.15 = 8,538.36/x
  3. Step 3: Cross multiply
    14,911.67x = 20,578.15 × 8,538.36
  4. Step 4: Simplify right side
    14,911.67x = 175,703,507.25
  5. Step 5: Solve for x
    x = 175,703,507.25/14,911.67
  6. Step 6: Final answer
    x = 11,782.95

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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.