Home / 20,917.06-31,373.28-6,126.12

Finding the Fourth Proportional to 20,917.06, 31,373.28 and 6,126.12

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Solution

The fourth proportional to 20,917.06, 31,373.28 and 6,126.12 is: 9,188.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.06 : 31,373.28 = 6,126.12 : x
  2. Step 2: Convert to fraction form
    20,917.06/31,373.28 = 6,126.12/x
  3. Step 3: Cross multiply
    20,917.06x = 31,373.28 × 6,126.12
  4. Step 4: Simplify right side
    20,917.06x = 192,196,478.07
  5. Step 5: Solve for x
    x = 192,196,478.07/20,917.06
  6. Step 6: Final answer
    x = 9,188.50

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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.