Home / 12,457.53-17,181.66-7,981.70

Finding the Fourth Proportional to 12,457.53, 17,181.66 and 7,981.70

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Solution

The fourth proportional to 12,457.53, 17,181.66 and 7,981.70 is: 11,008.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.53 : 17,181.66 = 7,981.70 : x
  2. Step 2: Convert to fraction form
    12,457.53/17,181.66 = 7,981.70/x
  3. Step 3: Cross multiply
    12,457.53x = 17,181.66 × 7,981.70
  4. Step 4: Simplify right side
    12,457.53x = 137,138,789.67
  5. Step 5: Solve for x
    x = 137,138,789.67/12,457.53
  6. Step 6: Final answer
    x = 11,008.51

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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.