Home / 20,461.26-30,699.08-10,080.30

Finding the Fourth Proportional to 20,461.26, 30,699.08 and 10,080.30

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Solution

The fourth proportional to 20,461.26, 30,699.08 and 10,080.30 is: 15,123.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.26 : 30,699.08 = 10,080.30 : x
  2. Step 2: Convert to fraction form
    20,461.26/30,699.08 = 10,080.30/x
  3. Step 3: Cross multiply
    20,461.26x = 30,699.08 × 10,080.30
  4. Step 4: Simplify right side
    20,461.26x = 309,455,936.12
  5. Step 5: Solve for x
    x = 309,455,936.12/20,461.26
  6. Step 6: Final answer
    x = 15,123.99

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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.