Home / 12,457.38-18,685.79-4,137.46

Finding the Fourth Proportional to 12,457.38, 18,685.79 and 4,137.46

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Solution

The fourth proportional to 12,457.38, 18,685.79 and 4,137.46 is: 6,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.38 : 18,685.79 = 4,137.46 : x
  2. Step 2: Convert to fraction form
    12,457.38/18,685.79 = 4,137.46/x
  3. Step 3: Cross multiply
    12,457.38x = 18,685.79 × 4,137.46
  4. Step 4: Simplify right side
    12,457.38x = 77,311,761.91
  5. Step 5: Solve for x
    x = 77,311,761.91/12,457.38
  6. Step 6: Final answer
    x = 6,206.10

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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.