Home / 18,792.78-28,180.68-5,642.58

Finding the Fourth Proportional to 18,792.78, 28,180.68 and 5,642.58

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Solution

The fourth proportional to 18,792.78, 28,180.68 and 5,642.58 is: 8,461.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.78 : 28,180.68 = 5,642.58 : x
  2. Step 2: Convert to fraction form
    18,792.78/28,180.68 = 5,642.58/x
  3. Step 3: Cross multiply
    18,792.78x = 28,180.68 × 5,642.58
  4. Step 4: Simplify right side
    18,792.78x = 159,011,741.35
  5. Step 5: Solve for x
    x = 159,011,741.35/18,792.78
  6. Step 6: Final answer
    x = 8,461.32

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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.