Home / 19,866.90-27,421.83-11,373.78

Finding the Fourth Proportional to 19,866.90, 27,421.83 and 11,373.78

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Solution

The fourth proportional to 19,866.90, 27,421.83 and 11,373.78 is: 15,698.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.90 : 27,421.83 = 11,373.78 : x
  2. Step 2: Convert to fraction form
    19,866.90/27,421.83 = 11,373.78/x
  3. Step 3: Cross multiply
    19,866.90x = 27,421.83 × 11,373.78
  4. Step 4: Simplify right side
    19,866.90x = 311,889,861.62
  5. Step 5: Solve for x
    x = 311,889,861.62/19,866.90
  6. Step 6: Final answer
    x = 15,698.97

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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.