Home / 15,529.13-21,429.09-8,814.89

Finding the Fourth Proportional to 15,529.13, 21,429.09 and 8,814.89

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Solution

The fourth proportional to 15,529.13, 21,429.09 and 8,814.89 is: 12,163.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.13 : 21,429.09 = 8,814.89 : x
  2. Step 2: Convert to fraction form
    15,529.13/21,429.09 = 8,814.89/x
  3. Step 3: Cross multiply
    15,529.13x = 21,429.09 × 8,814.89
  4. Step 4: Simplify right side
    15,529.13x = 188,894,964.00
  5. Step 5: Solve for x
    x = 188,894,964.00/15,529.13
  6. Step 6: Final answer
    x = 12,163.92

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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.