Home / 19,876.10-27,431.62-12,823.04

Finding the Fourth Proportional to 19,876.10, 27,431.62 and 12,823.04

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Solution

The fourth proportional to 19,876.10, 27,431.62 and 12,823.04 is: 17,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.10 : 27,431.62 = 12,823.04 : x
  2. Step 2: Convert to fraction form
    19,876.10/27,431.62 = 12,823.04/x
  3. Step 3: Cross multiply
    19,876.10x = 27,431.62 × 12,823.04
  4. Step 4: Simplify right side
    19,876.10x = 351,756,760.52
  5. Step 5: Solve for x
    x = 351,756,760.52/19,876.10
  6. Step 6: Final answer
    x = 17,697.47

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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.