Home / 28,226.56-42,320.64-12,636.16

Finding the Fourth Proportional to 28,226.56, 42,320.64 and 12,636.16

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Solution

The fourth proportional to 28,226.56, 42,320.64 and 12,636.16 is: 18,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,226.56 : 42,320.64 = 12,636.16 : x
  2. Step 2: Convert to fraction form
    28,226.56/42,320.64 = 12,636.16/x
  3. Step 3: Cross multiply
    28,226.56x = 42,320.64 × 12,636.16
  4. Step 4: Simplify right side
    28,226.56x = 534,770,378.34
  5. Step 5: Solve for x
    x = 534,770,378.34/28,226.56
  6. Step 6: Final answer
    x = 18,945.64

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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.