Home / 20,929.37-31,394.04-9,240.26

Finding the Fourth Proportional to 20,929.37, 31,394.04 and 9,240.26

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Solution

The fourth proportional to 20,929.37, 31,394.04 and 9,240.26 is: 13,860.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.37 : 31,394.04 = 9,240.26 : x
  2. Step 2: Convert to fraction form
    20,929.37/31,394.04 = 9,240.26/x
  3. Step 3: Cross multiply
    20,929.37x = 31,394.04 × 9,240.26
  4. Step 4: Simplify right side
    20,929.37x = 290,088,935.08
  5. Step 5: Solve for x
    x = 290,088,935.08/20,929.37
  6. Step 6: Final answer
    x = 13,860.38

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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.