Home / 20,865.06-31,268.40-9,744.18

Finding the Fourth Proportional to 20,865.06, 31,268.40 and 9,744.18

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Solution

The fourth proportional to 20,865.06, 31,268.40 and 9,744.18 is: 14,602.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.06 : 31,268.40 = 9,744.18 : x
  2. Step 2: Convert to fraction form
    20,865.06/31,268.40 = 9,744.18/x
  3. Step 3: Cross multiply
    20,865.06x = 31,268.40 × 9,744.18
  4. Step 4: Simplify right side
    20,865.06x = 304,684,917.91
  5. Step 5: Solve for x
    x = 304,684,917.91/20,865.06
  6. Step 6: Final answer
    x = 14,602.64

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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.