Home / 28,341.72-42,513.24-12,543.36

Finding the Fourth Proportional to 28,341.72, 42,513.24 and 12,543.36

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Solution

The fourth proportional to 28,341.72, 42,513.24 and 12,543.36 is: 18,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341.72 : 42,513.24 = 12,543.36 : x
  2. Step 2: Convert to fraction form
    28,341.72/42,513.24 = 12,543.36/x
  3. Step 3: Cross multiply
    28,341.72x = 42,513.24 × 12,543.36
  4. Step 4: Simplify right side
    28,341.72x = 533,258,874.09
  5. Step 5: Solve for x
    x = 533,258,874.09/28,341.72
  6. Step 6: Final answer
    x = 18,815.33

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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.