Home / 28,179.99-42,272.80-10,415.32

Finding the Fourth Proportional to 28,179.99, 42,272.80 and 10,415.32

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Solution

The fourth proportional to 28,179.99, 42,272.80 and 10,415.32 is: 15,624.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.99 : 42,272.80 = 10,415.32 : x
  2. Step 2: Convert to fraction form
    28,179.99/42,272.80 = 10,415.32/x
  3. Step 3: Cross multiply
    28,179.99x = 42,272.80 × 10,415.32
  4. Step 4: Simplify right side
    28,179.99x = 440,284,739.30
  5. Step 5: Solve for x
    x = 440,284,739.30/28,179.99
  6. Step 6: Final answer
    x = 15,624.02

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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.