Home / 20,876.29-28,792.55-18,353.04

Finding the Fourth Proportional to 20,876.29, 28,792.55 and 18,353.04

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Solution

The fourth proportional to 20,876.29, 28,792.55 and 18,353.04 is: 25,312.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.29 : 28,792.55 = 18,353.04 : x
  2. Step 2: Convert to fraction form
    20,876.29/28,792.55 = 18,353.04/x
  3. Step 3: Cross multiply
    20,876.29x = 28,792.55 × 18,353.04
  4. Step 4: Simplify right side
    20,876.29x = 528,430,821.85
  5. Step 5: Solve for x
    x = 528,430,821.85/20,876.29
  6. Step 6: Final answer
    x = 25,312.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.