Home / 21,613.80-29,826.18-12,184.32

Finding the Fourth Proportional to 21,613.80, 29,826.18 and 12,184.32

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Solution

The fourth proportional to 21,613.80, 29,826.18 and 12,184.32 is: 16,813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.80 : 29,826.18 = 12,184.32 : x
  2. Step 2: Convert to fraction form
    21,613.80/29,826.18 = 12,184.32/x
  3. Step 3: Cross multiply
    21,613.80x = 29,826.18 × 12,184.32
  4. Step 4: Simplify right side
    21,613.80x = 363,411,721.50
  5. Step 5: Solve for x
    x = 363,411,721.50/21,613.80
  6. Step 6: Final answer
    x = 16,813.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.