Home / 20,805.40-31,212.60-6,013.08

Finding the Fourth Proportional to 20,805.40, 31,212.60 and 6,013.08

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Solution

The fourth proportional to 20,805.40, 31,212.60 and 6,013.08 is: 9,020.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.40 : 31,212.60 = 6,013.08 : x
  2. Step 2: Convert to fraction form
    20,805.40/31,212.60 = 6,013.08/x
  3. Step 3: Cross multiply
    20,805.40x = 31,212.60 × 6,013.08
  4. Step 4: Simplify right side
    20,805.40x = 187,683,860.81
  5. Step 5: Solve for x
    x = 187,683,860.81/20,805.40
  6. Step 6: Final answer
    x = 9,020.92

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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.