Home / 21,098.57-29,118.91-12,145.85

Finding the Fourth Proportional to 21,098.57, 29,118.91 and 12,145.85

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Solution

The fourth proportional to 21,098.57, 29,118.91 and 12,145.85 is: 16,762.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.57 : 29,118.91 = 12,145.85 : x
  2. Step 2: Convert to fraction form
    21,098.57/29,118.91 = 12,145.85/x
  3. Step 3: Cross multiply
    21,098.57x = 29,118.91 × 12,145.85
  4. Step 4: Simplify right side
    21,098.57x = 353,673,852.29
  5. Step 5: Solve for x
    x = 353,673,852.29/21,098.57
  6. Step 6: Final answer
    x = 16,762.93

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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.