Home / 20,802.56-31,209.36-6,012.72

Finding the Fourth Proportional to 20,802.56, 31,209.36 and 6,012.72

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Solution

The fourth proportional to 20,802.56, 31,209.36 and 6,012.72 is: 9,020.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.56 : 31,209.36 = 6,012.72 : x
  2. Step 2: Convert to fraction form
    20,802.56/31,209.36 = 6,012.72/x
  3. Step 3: Cross multiply
    20,802.56x = 31,209.36 × 6,012.72
  4. Step 4: Simplify right side
    20,802.56x = 187,653,143.06
  5. Step 5: Solve for x
    x = 187,653,143.06/20,802.56
  6. Step 6: Final answer
    x = 9,020.68

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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.