Home / 28,109.55-42,143.57-17,013.80

Finding the Fourth Proportional to 28,109.55, 42,143.57 and 17,013.80

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Solution

The fourth proportional to 28,109.55, 42,143.57 and 17,013.80 is: 25,508.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.55 : 42,143.57 = 17,013.80 : x
  2. Step 2: Convert to fraction form
    28,109.55/42,143.57 = 17,013.80/x
  3. Step 3: Cross multiply
    28,109.55x = 42,143.57 × 17,013.80
  4. Step 4: Simplify right side
    28,109.55x = 717,022,271.27
  5. Step 5: Solve for x
    x = 717,022,271.27/28,109.55
  6. Step 6: Final answer
    x = 25,508.14

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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.