Home / 19,336.28-28,955.19-12,742.47

Finding the Fourth Proportional to 19,336.28, 28,955.19 and 12,742.47

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Solution

The fourth proportional to 19,336.28, 28,955.19 and 12,742.47 is: 19,081.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,336.28 : 28,955.19 = 12,742.47 : x
  2. Step 2: Convert to fraction form
    19,336.28/28,955.19 = 12,742.47/x
  3. Step 3: Cross multiply
    19,336.28x = 28,955.19 × 12,742.47
  4. Step 4: Simplify right side
    19,336.28x = 368,960,639.92
  5. Step 5: Solve for x
    x = 368,960,639.92/19,336.28
  6. Step 6: Final answer
    x = 19,081.27

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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.