Home / 21,234.08-29,303.81-12,161.10

Finding the Fourth Proportional to 21,234.08, 29,303.81 and 12,161.10

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Solution

The fourth proportional to 21,234.08, 29,303.81 and 12,161.10 is: 16,782.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.08 : 29,303.81 = 12,161.10 : x
  2. Step 2: Convert to fraction form
    21,234.08/29,303.81 = 12,161.10/x
  3. Step 3: Cross multiply
    21,234.08x = 29,303.81 × 12,161.10
  4. Step 4: Simplify right side
    21,234.08x = 356,366,658.48
  5. Step 5: Solve for x
    x = 356,366,658.48/21,234.08
  6. Step 6: Final answer
    x = 16,782.77

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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.