Home / 13,889.85-20,810.47-11,564.80

Finding the Fourth Proportional to 13,889.85, 20,810.47 and 11,564.80

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Solution

The fourth proportional to 13,889.85, 20,810.47 and 11,564.80 is: 17,326.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.85 : 20,810.47 = 11,564.80 : x
  2. Step 2: Convert to fraction form
    13,889.85/20,810.47 = 11,564.80/x
  3. Step 3: Cross multiply
    13,889.85x = 20,810.47 × 11,564.80
  4. Step 4: Simplify right side
    13,889.85x = 240,668,923.46
  5. Step 5: Solve for x
    x = 240,668,923.46/13,889.85
  6. Step 6: Final answer
    x = 17,326.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.