Home / 21,421.17-29,601.89-16,106.76

Finding the Fourth Proportional to 21,421.17, 29,601.89 and 16,106.76

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Solution

The fourth proportional to 21,421.17, 29,601.89 and 16,106.76 is: 22,257.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.17 : 29,601.89 = 16,106.76 : x
  2. Step 2: Convert to fraction form
    21,421.17/29,601.89 = 16,106.76/x
  3. Step 3: Cross multiply
    21,421.17x = 29,601.89 × 16,106.76
  4. Step 4: Simplify right side
    21,421.17x = 476,790,457.24
  5. Step 5: Solve for x
    x = 476,790,457.24/21,421.17
  6. Step 6: Final answer
    x = 22,257.91

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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.