Home / 19,644.58-29,385.87-12,613.78

Finding the Fourth Proportional to 19,644.58, 29,385.87 and 12,613.78

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Solution

The fourth proportional to 19,644.58, 29,385.87 and 12,613.78 is: 18,868.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,644.58 : 29,385.87 = 12,613.78 : x
  2. Step 2: Convert to fraction form
    19,644.58/29,385.87 = 12,613.78/x
  3. Step 3: Cross multiply
    19,644.58x = 29,385.87 × 12,613.78
  4. Step 4: Simplify right side
    19,644.58x = 370,666,899.29
  5. Step 5: Solve for x
    x = 370,666,899.29/19,644.58
  6. Step 6: Final answer
    x = 18,868.66

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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.