Home / 10,185.12-15,276.60-2,790.36

Finding the Fourth Proportional to 10,185.12, 15,276.60 and 2,790.36

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Solution

The fourth proportional to 10,185.12, 15,276.60 and 2,790.36 is: 4,185.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.12 : 15,276.60 = 2,790.36 : x
  2. Step 2: Convert to fraction form
    10,185.12/15,276.60 = 2,790.36/x
  3. Step 3: Cross multiply
    10,185.12x = 15,276.60 × 2,790.36
  4. Step 4: Simplify right side
    10,185.12x = 42,627,213.58
  5. Step 5: Solve for x
    x = 42,627,213.58/10,185.12
  6. Step 6: Final answer
    x = 4,185.24

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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.