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Finding the Fourth Proportional to 19,300.92, 28,956.86 and 9,947.79

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Solution

The fourth proportional to 19,300.92, 28,956.86 and 9,947.79 is: 14,924.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,300.92 : 28,956.86 = 9,947.79 : x
  2. Step 2: Convert to fraction form
    19,300.92/28,956.86 = 9,947.79/x
  3. Step 3: Cross multiply
    19,300.92x = 28,956.86 × 9,947.79
  4. Step 4: Simplify right side
    19,300.92x = 288,056,712.60
  5. Step 5: Solve for x
    x = 288,056,712.60/19,300.92
  6. Step 6: Final answer
    x = 14,924.51

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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.