Home / 20,688.76-31,008.84-9,571.97

Finding the Fourth Proportional to 20,688.76, 31,008.84 and 9,571.97

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Solution

The fourth proportional to 20,688.76, 31,008.84 and 9,571.97 is: 14,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.76 : 31,008.84 = 9,571.97 : x
  2. Step 2: Convert to fraction form
    20,688.76/31,008.84 = 9,571.97/x
  3. Step 3: Cross multiply
    20,688.76x = 31,008.84 × 9,571.97
  4. Step 4: Simplify right side
    20,688.76x = 296,815,495.28
  5. Step 5: Solve for x
    x = 296,815,495.28/20,688.76
  6. Step 6: Final answer
    x = 14,346.70

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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.