Home / 20,189.70-30,328.20-17,075.88

Finding the Fourth Proportional to 20,189.70, 30,328.20 and 17,075.88

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Solution

The fourth proportional to 20,189.70, 30,328.20 and 17,075.88 is: 25,650.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.70 : 30,328.20 = 17,075.88 : x
  2. Step 2: Convert to fraction form
    20,189.70/30,328.20 = 17,075.88/x
  3. Step 3: Cross multiply
    20,189.70x = 30,328.20 × 17,075.88
  4. Step 4: Simplify right side
    20,189.70x = 517,880,703.82
  5. Step 5: Solve for x
    x = 517,880,703.82/20,189.70
  6. Step 6: Final answer
    x = 25,650.74

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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.