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Finding the Fourth Proportional to 18,497.70, 27,746.55 and 8,637.98

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Solution

The fourth proportional to 18,497.70, 27,746.55 and 8,637.98 is: 12,956.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,497.70 : 27,746.55 = 8,637.98 : x
  2. Step 2: Convert to fraction form
    18,497.70/27,746.55 = 8,637.98/x
  3. Step 3: Cross multiply
    18,497.70x = 27,746.55 × 8,637.98
  4. Step 4: Simplify right side
    18,497.70x = 239,674,005.24
  5. Step 5: Solve for x
    x = 239,674,005.24/18,497.70
  6. Step 6: Final answer
    x = 12,956.96

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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.