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Finding the Fourth Proportional to 13,957.92, 19,260.18 and 8,291.16

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Solution

The fourth proportional to 13,957.92, 19,260.18 and 8,291.16 is: 11,440.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.92 : 19,260.18 = 8,291.16 : x
  2. Step 2: Convert to fraction form
    13,957.92/19,260.18 = 8,291.16/x
  3. Step 3: Cross multiply
    13,957.92x = 19,260.18 × 8,291.16
  4. Step 4: Simplify right side
    13,957.92x = 159,689,234.01
  5. Step 5: Solve for x
    x = 159,689,234.01/13,957.92
  6. Step 6: Final answer
    x = 11,440.76

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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.