Home / 20,907.48-31,349.88-6,864.24

Finding the Fourth Proportional to 20,907.48, 31,349.88 and 6,864.24

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Solution

The fourth proportional to 20,907.48, 31,349.88 and 6,864.24 is: 10,292.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.48 : 31,349.88 = 6,864.24 : x
  2. Step 2: Convert to fraction form
    20,907.48/31,349.88 = 6,864.24/x
  3. Step 3: Cross multiply
    20,907.48x = 31,349.88 × 6,864.24
  4. Step 4: Simplify right side
    20,907.48x = 215,193,100.29
  5. Step 5: Solve for x
    x = 215,193,100.29/20,907.48
  6. Step 6: Final answer
    x = 10,292.64

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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.