Home / 13,559.78-20,379.03-8,971.94

Finding the Fourth Proportional to 13,559.78, 20,379.03 and 8,971.94

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Solution

The fourth proportional to 13,559.78, 20,379.03 and 8,971.94 is: 13,483.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.78 : 20,379.03 = 8,971.94 : x
  2. Step 2: Convert to fraction form
    13,559.78/20,379.03 = 8,971.94/x
  3. Step 3: Cross multiply
    13,559.78x = 20,379.03 × 8,971.94
  4. Step 4: Simplify right side
    13,559.78x = 182,839,434.42
  5. Step 5: Solve for x
    x = 182,839,434.42/13,559.78
  6. Step 6: Final answer
    x = 13,483.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.