Home / 21,009.92-31,516.70-6,966.95

Finding the Fourth Proportional to 21,009.92, 31,516.70 and 6,966.95

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Solution

The fourth proportional to 21,009.92, 31,516.70 and 6,966.95 is: 10,451.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.92 : 31,516.70 = 6,966.95 : x
  2. Step 2: Convert to fraction form
    21,009.92/31,516.70 = 6,966.95/x
  3. Step 3: Cross multiply
    21,009.92x = 31,516.70 × 6,966.95
  4. Step 4: Simplify right side
    21,009.92x = 219,575,080.65
  5. Step 5: Solve for x
    x = 219,575,080.65/21,009.92
  6. Step 6: Final answer
    x = 10,451.02

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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.