Home / 19,028.72-28,543.20-4,988.63

Finding the Fourth Proportional to 19,028.72, 28,543.20 and 4,988.63

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Solution

The fourth proportional to 19,028.72, 28,543.20 and 4,988.63 is: 7,482.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,028.72 : 28,543.20 = 4,988.63 : x
  2. Step 2: Convert to fraction form
    19,028.72/28,543.20 = 4,988.63/x
  3. Step 3: Cross multiply
    19,028.72x = 28,543.20 × 4,988.63
  4. Step 4: Simplify right side
    19,028.72x = 142,391,321.10
  5. Step 5: Solve for x
    x = 142,391,321.10/19,028.72
  6. Step 6: Final answer
    x = 7,482.97

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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.