Home / 20,551.36-30,877.76-13,159.04

Finding the Fourth Proportional to 20,551.36, 30,877.76 and 13,159.04

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Solution

The fourth proportional to 20,551.36, 30,877.76 and 13,159.04 is: 19,771.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.36 : 30,877.76 = 13,159.04 : x
  2. Step 2: Convert to fraction form
    20,551.36/30,877.76 = 13,159.04/x
  3. Step 3: Cross multiply
    20,551.36x = 30,877.76 × 13,159.04
  4. Step 4: Simplify right side
    20,551.36x = 406,321,678.95
  5. Step 5: Solve for x
    x = 406,321,678.95/20,551.36
  6. Step 6: Final answer
    x = 19,771.04

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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.