Home / 20,930.26-31,395.48-7,088.98

Finding the Fourth Proportional to 20,930.26, 31,395.48 and 7,088.98

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Solution

The fourth proportional to 20,930.26, 31,395.48 and 7,088.98 is: 10,633.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.26 : 31,395.48 = 7,088.98 : x
  2. Step 2: Convert to fraction form
    20,930.26/31,395.48 = 7,088.98/x
  3. Step 3: Cross multiply
    20,930.26x = 31,395.48 × 7,088.98
  4. Step 4: Simplify right side
    20,930.26x = 222,561,929.81
  5. Step 5: Solve for x
    x = 222,561,929.81/20,930.26
  6. Step 6: Final answer
    x = 10,633.50

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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.