Home / 21,000.45-31,502.34-6,959.91

Finding the Fourth Proportional to 21,000.45, 31,502.34 and 6,959.91

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Solution

The fourth proportional to 21,000.45, 31,502.34 and 6,959.91 is: 10,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.45 : 31,502.34 = 6,959.91 : x
  2. Step 2: Convert to fraction form
    21,000.45/31,502.34 = 6,959.91/x
  3. Step 3: Cross multiply
    21,000.45x = 31,502.34 × 6,959.91
  4. Step 4: Simplify right side
    21,000.45x = 219,253,451.19
  5. Step 5: Solve for x
    x = 219,253,451.19/21,000.45
  6. Step 6: Final answer
    x = 10,440.42

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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.