Home / 28,115.44-42,179.56-9,646.32

Finding the Fourth Proportional to 28,115.44, 42,179.56 and 9,646.32

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Solution

The fourth proportional to 28,115.44, 42,179.56 and 9,646.32 is: 14,471.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.44 : 42,179.56 = 9,646.32 : x
  2. Step 2: Convert to fraction form
    28,115.44/42,179.56 = 9,646.32/x
  3. Step 3: Cross multiply
    28,115.44x = 42,179.56 × 9,646.32
  4. Step 4: Simplify right side
    28,115.44x = 406,877,533.22
  5. Step 5: Solve for x
    x = 406,877,533.22/28,115.44
  6. Step 6: Final answer
    x = 14,471.68

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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.