Home / 21,320.08-29,421.34-11,760.84

Finding the Fourth Proportional to 21,320.08, 29,421.34 and 11,760.84

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Solution

The fourth proportional to 21,320.08, 29,421.34 and 11,760.84 is: 16,229.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.08 : 29,421.34 = 11,760.84 : x
  2. Step 2: Convert to fraction form
    21,320.08/29,421.34 = 11,760.84/x
  3. Step 3: Cross multiply
    21,320.08x = 29,421.34 × 11,760.84
  4. Step 4: Simplify right side
    21,320.08x = 346,019,613.52
  5. Step 5: Solve for x
    x = 346,019,613.52/21,320.08
  6. Step 6: Final answer
    x = 16,229.75

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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.