Home / 45,917.40-68,876.94-12,637.28

Finding the Fourth Proportional to 45,917.40, 68,876.94 and 12,637.28

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Solution

The fourth proportional to 45,917.40, 68,876.94 and 12,637.28 is: 18,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,917.40 : 68,876.94 = 12,637.28 : x
  2. Step 2: Convert to fraction form
    45,917.40/68,876.94 = 12,637.28/x
  3. Step 3: Cross multiply
    45,917.40x = 68,876.94 × 12,637.28
  4. Step 4: Simplify right side
    45,917.40x = 870,417,176.32
  5. Step 5: Solve for x
    x = 870,417,176.32/45,917.40
  6. Step 6: Final answer
    x = 18,956.15

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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.