Home / 12,869.92-19,298.71-6,288.40

Finding the Fourth Proportional to 12,869.92, 19,298.71 and 6,288.40

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Solution

The fourth proportional to 12,869.92, 19,298.71 and 6,288.40 is: 9,429.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.92 : 19,298.71 = 6,288.40 : x
  2. Step 2: Convert to fraction form
    12,869.92/19,298.71 = 6,288.40/x
  3. Step 3: Cross multiply
    12,869.92x = 19,298.71 × 6,288.40
  4. Step 4: Simplify right side
    12,869.92x = 121,358,007.96
  5. Step 5: Solve for x
    x = 121,358,007.96/12,869.92
  6. Step 6: Final answer
    x = 9,429.59

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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.