Home / 28,115.69-42,152.70-17,019.75

Finding the Fourth Proportional to 28,115.69, 42,152.70 and 17,019.75

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Solution

The fourth proportional to 28,115.69, 42,152.70 and 17,019.75 is: 25,517.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.69 : 42,152.70 = 17,019.75 : x
  2. Step 2: Convert to fraction form
    28,115.69/42,152.70 = 17,019.75/x
  3. Step 3: Cross multiply
    28,115.69x = 42,152.70 × 17,019.75
  4. Step 4: Simplify right side
    28,115.69x = 717,428,415.83
  5. Step 5: Solve for x
    x = 717,428,415.83/28,115.69
  6. Step 6: Final answer
    x = 25,517.01

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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.