Home / 14,128.19-21,191.77-4,267.21

Finding the Fourth Proportional to 14,128.19, 21,191.77 and 4,267.21

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Solution

The fourth proportional to 14,128.19, 21,191.77 and 4,267.21 is: 6,400.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.19 : 21,191.77 = 4,267.21 : x
  2. Step 2: Convert to fraction form
    14,128.19/21,191.77 = 4,267.21/x
  3. Step 3: Cross multiply
    14,128.19x = 21,191.77 × 4,267.21
  4. Step 4: Simplify right side
    14,128.19x = 90,429,732.86
  5. Step 5: Solve for x
    x = 90,429,732.86/14,128.19
  6. Step 6: Final answer
    x = 6,400.66

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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.