Home / 31,457.46-47,146.68-18,816.54

Finding the Fourth Proportional to 31,457.46, 47,146.68 and 18,816.54

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Solution

The fourth proportional to 31,457.46, 47,146.68 and 18,816.54 is: 28,201.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.46 : 47,146.68 = 18,816.54 : x
  2. Step 2: Convert to fraction form
    31,457.46/47,146.68 = 18,816.54/x
  3. Step 3: Cross multiply
    31,457.46x = 47,146.68 × 18,816.54
  4. Step 4: Simplify right side
    31,457.46x = 887,137,478.49
  5. Step 5: Solve for x
    x = 887,137,478.49/31,457.46
  6. Step 6: Final answer
    x = 28,201.18

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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.