Home / 42,489.64-63,718.61-12,495.84

Finding the Fourth Proportional to 42,489.64, 63,718.61 and 12,495.84

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Solution

The fourth proportional to 42,489.64, 63,718.61 and 12,495.84 is: 18,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,489.64 : 63,718.61 = 12,495.84 : x
  2. Step 2: Convert to fraction form
    42,489.64/63,718.61 = 12,495.84/x
  3. Step 3: Cross multiply
    42,489.64x = 63,718.61 × 12,495.84
  4. Step 4: Simplify right side
    42,489.64x = 796,217,555.58
  5. Step 5: Solve for x
    x = 796,217,555.58/42,489.64
  6. Step 6: Final answer
    x = 18,739.10

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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.