Home / 28,180.62-42,270.84-8,459.16

Finding the Fourth Proportional to 28,180.62, 42,270.84 and 8,459.16

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Solution

The fourth proportional to 28,180.62, 42,270.84 and 8,459.16 is: 12,688.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.62 : 42,270.84 = 8,459.16 : x
  2. Step 2: Convert to fraction form
    28,180.62/42,270.84 = 8,459.16/x
  3. Step 3: Cross multiply
    28,180.62x = 42,270.84 × 8,459.16
  4. Step 4: Simplify right side
    28,180.62x = 357,575,798.89
  5. Step 5: Solve for x
    x = 357,575,798.89/28,180.62
  6. Step 6: Final answer
    x = 12,688.71

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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.