Home / 13,955.52-20,911.40-11,866.94

Finding the Fourth Proportional to 13,955.52, 20,911.40 and 11,866.94

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Solution

The fourth proportional to 13,955.52, 20,911.40 and 11,866.94 is: 17,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.52 : 20,911.40 = 11,866.94 : x
  2. Step 2: Convert to fraction form
    13,955.52/20,911.40 = 11,866.94/x
  3. Step 3: Cross multiply
    13,955.52x = 20,911.40 × 11,866.94
  4. Step 4: Simplify right side
    13,955.52x = 248,154,288.14
  5. Step 5: Solve for x
    x = 248,154,288.14/13,955.52
  6. Step 6: Final answer
    x = 17,781.80

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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.