Home / 19,309.68-28,979.10-12,733.56

Finding the Fourth Proportional to 19,309.68, 28,979.10 and 12,733.56

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Solution

The fourth proportional to 19,309.68, 28,979.10 and 12,733.56 is: 19,109.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309.68 : 28,979.10 = 12,733.56 : x
  2. Step 2: Convert to fraction form
    19,309.68/28,979.10 = 12,733.56/x
  3. Step 3: Cross multiply
    19,309.68x = 28,979.10 × 12,733.56
  4. Step 4: Simplify right side
    19,309.68x = 369,007,108.60
  5. Step 5: Solve for x
    x = 369,007,108.60/19,309.68
  6. Step 6: Final answer
    x = 19,109.95

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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.