Home / 20,973.67-31,476.21-13,087.70

Finding the Fourth Proportional to 20,973.67, 31,476.21 and 13,087.70

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Solution

The fourth proportional to 20,973.67, 31,476.21 and 13,087.70 is: 19,641.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.67 : 31,476.21 = 13,087.70 : x
  2. Step 2: Convert to fraction form
    20,973.67/31,476.21 = 13,087.70/x
  3. Step 3: Cross multiply
    20,973.67x = 31,476.21 × 13,087.70
  4. Step 4: Simplify right side
    20,973.67x = 411,951,193.62
  5. Step 5: Solve for x
    x = 411,951,193.62/20,973.67
  6. Step 6: Final answer
    x = 19,641.35

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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.