Home / 10,019.80-13,824.84-6,478.75

Finding the Fourth Proportional to 10,019.80, 13,824.84 and 6,478.75

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Solution

The fourth proportional to 10,019.80, 13,824.84 and 6,478.75 is: 8,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,019.80 : 13,824.84 = 6,478.75 : x
  2. Step 2: Convert to fraction form
    10,019.80/13,824.84 = 6,478.75/x
  3. Step 3: Cross multiply
    10,019.80x = 13,824.84 × 6,478.75
  4. Step 4: Simplify right side
    10,019.80x = 89,567,682.15
  5. Step 5: Solve for x
    x = 89,567,682.15/10,019.80
  6. Step 6: Final answer
    x = 8,939.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.