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Finding the Fourth Proportional to 31,003.40, 46,506.90 and 8,818.40

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Solution

The fourth proportional to 31,003.40, 46,506.90 and 8,818.40 is: 13,228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,003.40 : 46,506.90 = 8,818.40 : x
  2. Step 2: Convert to fraction form
    31,003.40/46,506.90 = 8,818.40/x
  3. Step 3: Cross multiply
    31,003.40x = 46,506.90 × 8,818.40
  4. Step 4: Simplify right side
    31,003.40x = 410,116,446.96
  5. Step 5: Solve for x
    x = 410,116,446.96/31,003.40
  6. Step 6: Final answer
    x = 13,228.11

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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.