Home / 31,457.12-47,185.68-8,083.58

Finding the Fourth Proportional to 31,457.12, 47,185.68 and 8,083.58

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Solution

The fourth proportional to 31,457.12, 47,185.68 and 8,083.58 is: 12,125.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.12 : 47,185.68 = 8,083.58 : x
  2. Step 2: Convert to fraction form
    31,457.12/47,185.68 = 8,083.58/x
  3. Step 3: Cross multiply
    31,457.12x = 47,185.68 × 8,083.58
  4. Step 4: Simplify right side
    31,457.12x = 381,429,219.13
  5. Step 5: Solve for x
    x = 381,429,219.13/31,457.12
  6. Step 6: Final answer
    x = 12,125.37

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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.