Home / 28,405.42-42,575.78-17,287.62

Finding the Fourth Proportional to 28,405.42, 42,575.78 and 17,287.62

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Solution

The fourth proportional to 28,405.42, 42,575.78 and 17,287.62 is: 25,911.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.42 : 42,575.78 = 17,287.62 : x
  2. Step 2: Convert to fraction form
    28,405.42/42,575.78 = 17,287.62/x
  3. Step 3: Cross multiply
    28,405.42x = 42,575.78 × 17,287.62
  4. Step 4: Simplify right side
    28,405.42x = 736,033,905.84
  5. Step 5: Solve for x
    x = 736,033,905.84/28,405.42
  6. Step 6: Final answer
    x = 25,911.74

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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.