Home / 14,975.86-20,666.79-8,261.38

Finding the Fourth Proportional to 14,975.86, 20,666.79 and 8,261.38

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Solution

The fourth proportional to 14,975.86, 20,666.79 and 8,261.38 is: 11,400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.86 : 20,666.79 = 8,261.38 : x
  2. Step 2: Convert to fraction form
    14,975.86/20,666.79 = 8,261.38/x
  3. Step 3: Cross multiply
    14,975.86x = 20,666.79 × 8,261.38
  4. Step 4: Simplify right side
    14,975.86x = 170,736,205.57
  5. Step 5: Solve for x
    x = 170,736,205.57/14,975.86
  6. Step 6: Final answer
    x = 11,400.76

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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.