Home / 19,143.49-28,718.68-7,892.57

Finding the Fourth Proportional to 19,143.49, 28,718.68 and 7,892.57

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Solution

The fourth proportional to 19,143.49, 28,718.68 and 7,892.57 is: 11,840.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.49 : 28,718.68 = 7,892.57 : x
  2. Step 2: Convert to fraction form
    19,143.49/28,718.68 = 7,892.57/x
  3. Step 3: Cross multiply
    19,143.49x = 28,718.68 × 7,892.57
  4. Step 4: Simplify right side
    19,143.49x = 226,664,192.21
  5. Step 5: Solve for x
    x = 226,664,192.21/19,143.49
  6. Step 6: Final answer
    x = 11,840.28

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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.