Home / 14,191.72-21,265.47-5,421.85

Finding the Fourth Proportional to 14,191.72, 21,265.47 and 5,421.85

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Solution

The fourth proportional to 14,191.72, 21,265.47 and 5,421.85 is: 8,124.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,191.72 : 21,265.47 = 5,421.85 : x
  2. Step 2: Convert to fraction form
    14,191.72/21,265.47 = 5,421.85/x
  3. Step 3: Cross multiply
    14,191.72x = 21,265.47 × 5,421.85
  4. Step 4: Simplify right side
    14,191.72x = 115,298,188.52
  5. Step 5: Solve for x
    x = 115,298,188.52/14,191.72
  6. Step 6: Final answer
    x = 8,124.33

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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.