Home / 28,276.87-42,405.57-14,231.47

Finding the Fourth Proportional to 28,276.87, 42,405.57 and 14,231.47

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Solution

The fourth proportional to 28,276.87, 42,405.57 and 14,231.47 is: 21,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.87 : 42,405.57 = 14,231.47 : x
  2. Step 2: Convert to fraction form
    28,276.87/42,405.57 = 14,231.47/x
  3. Step 3: Cross multiply
    28,276.87x = 42,405.57 × 14,231.47
  4. Step 4: Simplify right side
    28,276.87x = 603,493,597.29
  5. Step 5: Solve for x
    x = 603,493,597.29/28,276.87
  6. Step 6: Final answer
    x = 21,342.31

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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.