Home / 19,181.76-28,767.28-12,151.32

Finding the Fourth Proportional to 19,181.76, 28,767.28 and 12,151.32

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Solution

The fourth proportional to 19,181.76, 28,767.28 and 12,151.32 is: 18,223.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.76 : 28,767.28 = 12,151.32 : x
  2. Step 2: Convert to fraction form
    19,181.76/28,767.28 = 12,151.32/x
  3. Step 3: Cross multiply
    19,181.76x = 28,767.28 × 12,151.32
  4. Step 4: Simplify right side
    19,181.76x = 349,560,424.81
  5. Step 5: Solve for x
    x = 349,560,424.81/19,181.76
  6. Step 6: Final answer
    x = 18,223.58

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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.