Home / 20,688.06-31,007.78-9,571.26

Finding the Fourth Proportional to 20,688.06, 31,007.78 and 9,571.26

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Solution

The fourth proportional to 20,688.06, 31,007.78 and 9,571.26 is: 14,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.06 : 31,007.78 = 9,571.26 : x
  2. Step 2: Convert to fraction form
    20,688.06/31,007.78 = 9,571.26/x
  3. Step 3: Cross multiply
    20,688.06x = 31,007.78 × 9,571.26
  4. Step 4: Simplify right side
    20,688.06x = 296,783,664.61
  5. Step 5: Solve for x
    x = 296,783,664.61/20,688.06
  6. Step 6: Final answer
    x = 14,345.65

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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.