Home / 21,429.19-32,131.47-11,421.61

Finding the Fourth Proportional to 21,429.19, 32,131.47 and 11,421.61

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Solution

The fourth proportional to 21,429.19, 32,131.47 and 11,421.61 is: 17,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.19 : 32,131.47 = 11,421.61 : x
  2. Step 2: Convert to fraction form
    21,429.19/32,131.47 = 11,421.61/x
  3. Step 3: Cross multiply
    21,429.19x = 32,131.47 × 11,421.61
  4. Step 4: Simplify right side
    21,429.19x = 366,993,119.07
  5. Step 5: Solve for x
    x = 366,993,119.07/21,429.19
  6. Step 6: Final answer
    x = 17,125.85

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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.