Home / 20,923.51-31,358.58-9,805.68

Finding the Fourth Proportional to 20,923.51, 31,358.58 and 9,805.68

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Solution

The fourth proportional to 20,923.51, 31,358.58 and 9,805.68 is: 14,696.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.51 : 31,358.58 = 9,805.68 : x
  2. Step 2: Convert to fraction form
    20,923.51/31,358.58 = 9,805.68/x
  3. Step 3: Cross multiply
    20,923.51x = 31,358.58 × 9,805.68
  4. Step 4: Simplify right side
    20,923.51x = 307,492,200.73
  5. Step 5: Solve for x
    x = 307,492,200.73/20,923.51
  6. Step 6: Final answer
    x = 14,696.01

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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.