Home / 30,115.24-45,175.42-10,385.80

Finding the Fourth Proportional to 30,115.24, 45,175.42 and 10,385.80

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Solution

The fourth proportional to 30,115.24, 45,175.42 and 10,385.80 is: 15,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.24 : 45,175.42 = 10,385.80 : x
  2. Step 2: Convert to fraction form
    30,115.24/45,175.42 = 10,385.80/x
  3. Step 3: Cross multiply
    30,115.24x = 45,175.42 × 10,385.80
  4. Step 4: Simplify right side
    30,115.24x = 469,182,877.04
  5. Step 5: Solve for x
    x = 469,182,877.04/30,115.24
  6. Step 6: Final answer
    x = 15,579.58

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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.