Home / 12,828.21-17,705.90-7,524.74

Finding the Fourth Proportional to 12,828.21, 17,705.90 and 7,524.74

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Solution

The fourth proportional to 12,828.21, 17,705.90 and 7,524.74 is: 10,385.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828.21 : 17,705.90 = 7,524.74 : x
  2. Step 2: Convert to fraction form
    12,828.21/17,705.90 = 7,524.74/x
  3. Step 3: Cross multiply
    12,828.21x = 17,705.90 × 7,524.74
  4. Step 4: Simplify right side
    12,828.21x = 133,232,167.81
  5. Step 5: Solve for x
    x = 133,232,167.81/12,828.21
  6. Step 6: Final answer
    x = 10,385.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.