Home / 12,132.39-16,742.96-6,827.21

Finding the Fourth Proportional to 12,132.39, 16,742.96 and 6,827.21

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Solution

The fourth proportional to 12,132.39, 16,742.96 and 6,827.21 is: 9,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.39 : 16,742.96 = 6,827.21 : x
  2. Step 2: Convert to fraction form
    12,132.39/16,742.96 = 6,827.21/x
  3. Step 3: Cross multiply
    12,132.39x = 16,742.96 × 6,827.21
  4. Step 4: Simplify right side
    12,132.39x = 114,307,703.94
  5. Step 5: Solve for x
    x = 114,307,703.94/12,132.39
  6. Step 6: Final answer
    x = 9,421.70

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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.