Home / 20,958.32-31,440.69-9,866.18

Finding the Fourth Proportional to 20,958.32, 31,440.69 and 9,866.18

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Solution

The fourth proportional to 20,958.32, 31,440.69 and 9,866.18 is: 14,800.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.32 : 31,440.69 = 9,866.18 : x
  2. Step 2: Convert to fraction form
    20,958.32/31,440.69 = 9,866.18/x
  3. Step 3: Cross multiply
    20,958.32x = 31,440.69 × 9,866.18
  4. Step 4: Simplify right side
    20,958.32x = 310,199,349.66
  5. Step 5: Solve for x
    x = 310,199,349.66/20,958.32
  6. Step 6: Final answer
    x = 14,800.78

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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.