Home / 10,868.40-16,291.48-4,291.92

Finding the Fourth Proportional to 10,868.40, 16,291.48 and 4,291.92

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Solution

The fourth proportional to 10,868.40, 16,291.48 and 4,291.92 is: 6,433.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,868.40 : 16,291.48 = 4,291.92 : x
  2. Step 2: Convert to fraction form
    10,868.40/16,291.48 = 4,291.92/x
  3. Step 3: Cross multiply
    10,868.40x = 16,291.48 × 4,291.92
  4. Step 4: Simplify right side
    10,868.40x = 69,921,728.84
  5. Step 5: Solve for x
    x = 69,921,728.84/10,868.40
  6. Step 6: Final answer
    x = 6,433.49

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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.