Home / 20,068.16-30,075.30-12,137.45

Finding the Fourth Proportional to 20,068.16, 30,075.30 and 12,137.45

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Solution

The fourth proportional to 20,068.16, 30,075.30 and 12,137.45 is: 18,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.16 : 30,075.30 = 12,137.45 : x
  2. Step 2: Convert to fraction form
    20,068.16/30,075.30 = 12,137.45/x
  3. Step 3: Cross multiply
    20,068.16x = 30,075.30 × 12,137.45
  4. Step 4: Simplify right side
    20,068.16x = 365,037,299.61
  5. Step 5: Solve for x
    x = 365,037,299.61/20,068.16
  6. Step 6: Final answer
    x = 18,189.88

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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.