Home / 28,010.56-42,011.52-12,425.44

Finding the Fourth Proportional to 28,010.56, 42,011.52 and 12,425.44

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Solution

The fourth proportional to 28,010.56, 42,011.52 and 12,425.44 is: 18,636.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.56 : 42,011.52 = 12,425.44 : x
  2. Step 2: Convert to fraction form
    28,010.56/42,011.52 = 12,425.44/x
  3. Step 3: Cross multiply
    28,010.56x = 42,011.52 × 12,425.44
  4. Step 4: Simplify right side
    28,010.56x = 522,011,621.07
  5. Step 5: Solve for x
    x = 522,011,621.07/28,010.56
  6. Step 6: Final answer
    x = 18,636.24

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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.