Home / 31,689.45-47,516.72-21,705.64

Finding the Fourth Proportional to 31,689.45, 47,516.72 and 21,705.64

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Solution

The fourth proportional to 31,689.45, 47,516.72 and 21,705.64 is: 32,546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.45 : 47,516.72 = 21,705.64 : x
  2. Step 2: Convert to fraction form
    31,689.45/47,516.72 = 21,705.64/x
  3. Step 3: Cross multiply
    31,689.45x = 47,516.72 × 21,705.64
  4. Step 4: Simplify right side
    31,689.45x = 1,031,380,590.98
  5. Step 5: Solve for x
    x = 1,031,380,590.98/31,689.45
  6. Step 6: Final answer
    x = 32,546.50

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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.