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Finding the Fourth Proportional to 18,606.15, 27,869.13 and 8,730.63

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Solution

The fourth proportional to 18,606.15, 27,869.13 and 8,730.63 is: 13,077.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.15 : 27,869.13 = 8,730.63 : x
  2. Step 2: Convert to fraction form
    18,606.15/27,869.13 = 8,730.63/x
  3. Step 3: Cross multiply
    18,606.15x = 27,869.13 × 8,730.63
  4. Step 4: Simplify right side
    18,606.15x = 243,315,062.45
  5. Step 5: Solve for x
    x = 243,315,062.45/18,606.15
  6. Step 6: Final answer
    x = 13,077.13

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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.