Home / 30,200.88-45,300.96-21,279.36

Finding the Fourth Proportional to 30,200.88, 45,300.96 and 21,279.36

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Solution

The fourth proportional to 30,200.88, 45,300.96 and 21,279.36 is: 31,918.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,200.88 : 45,300.96 = 21,279.36 : x
  2. Step 2: Convert to fraction form
    30,200.88/45,300.96 = 21,279.36/x
  3. Step 3: Cross multiply
    30,200.88x = 45,300.96 × 21,279.36
  4. Step 4: Simplify right side
    30,200.88x = 963,975,436.19
  5. Step 5: Solve for x
    x = 963,975,436.19/30,200.88
  6. Step 6: Final answer
    x = 31,918.79

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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.