Home / 31,828.32-47,743.20-8,457.12

Finding the Fourth Proportional to 31,828.32, 47,743.20 and 8,457.12

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Solution

The fourth proportional to 31,828.32, 47,743.20 and 8,457.12 is: 12,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,828.32 : 47,743.20 = 8,457.12 : x
  2. Step 2: Convert to fraction form
    31,828.32/47,743.20 = 8,457.12/x
  3. Step 3: Cross multiply
    31,828.32x = 47,743.20 × 8,457.12
  4. Step 4: Simplify right side
    31,828.32x = 403,769,971.58
  5. Step 5: Solve for x
    x = 403,769,971.58/31,828.32
  6. Step 6: Final answer
    x = 12,685.87

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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.