Home / 20,322.90-30,436.80-17,579.70

Finding the Fourth Proportional to 20,322.90, 30,436.80 and 17,579.70

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Solution

The fourth proportional to 20,322.90, 30,436.80 and 17,579.70 is: 26,328.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.90 : 30,436.80 = 17,579.70 : x
  2. Step 2: Convert to fraction form
    20,322.90/30,436.80 = 17,579.70/x
  3. Step 3: Cross multiply
    20,322.90x = 30,436.80 × 17,579.70
  4. Step 4: Simplify right side
    20,322.90x = 535,069,812.96
  5. Step 5: Solve for x
    x = 535,069,812.96/20,322.90
  6. Step 6: Final answer
    x = 26,328.42

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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.