Home / 21,567.99-29,763.79-12,613.65

Finding the Fourth Proportional to 21,567.99, 29,763.79 and 12,613.65

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Solution

The fourth proportional to 21,567.99, 29,763.79 and 12,613.65 is: 17,406.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.99 : 29,763.79 = 12,613.65 : x
  2. Step 2: Convert to fraction form
    21,567.99/29,763.79 = 12,613.65/x
  3. Step 3: Cross multiply
    21,567.99x = 29,763.79 × 12,613.65
  4. Step 4: Simplify right side
    21,567.99x = 375,429,933.89
  5. Step 5: Solve for x
    x = 375,429,933.89/21,567.99
  6. Step 6: Final answer
    x = 17,406.81

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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.