Home / 19,187.79-28,812.95-11,838.96

Finding the Fourth Proportional to 19,187.79, 28,812.95 and 11,838.96

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Solution

The fourth proportional to 19,187.79, 28,812.95 and 11,838.96 is: 17,777.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.79 : 28,812.95 = 11,838.96 : x
  2. Step 2: Convert to fraction form
    19,187.79/28,812.95 = 11,838.96/x
  3. Step 3: Cross multiply
    19,187.79x = 28,812.95 × 11,838.96
  4. Step 4: Simplify right side
    19,187.79x = 341,115,362.53
  5. Step 5: Solve for x
    x = 341,115,362.53/19,187.79
  6. Step 6: Final answer
    x = 17,777.73

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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.