Home / 20,998.40-31,502.04-6,957.63

Finding the Fourth Proportional to 20,998.40, 31,502.04 and 6,957.63

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Solution

The fourth proportional to 20,998.40, 31,502.04 and 6,957.63 is: 10,437.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.40 : 31,502.04 = 6,957.63 : x
  2. Step 2: Convert to fraction form
    20,998.40/31,502.04 = 6,957.63/x
  3. Step 3: Cross multiply
    20,998.40x = 31,502.04 × 6,957.63
  4. Step 4: Simplify right side
    20,998.40x = 219,179,538.57
  5. Step 5: Solve for x
    x = 219,179,538.57/20,998.40
  6. Step 6: Final answer
    x = 10,437.92

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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.