Home / 10,899.59-15,039.74-6,119.78

Finding the Fourth Proportional to 10,899.59, 15,039.74 and 6,119.78

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Solution

The fourth proportional to 10,899.59, 15,039.74 and 6,119.78 is: 8,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.59 : 15,039.74 = 6,119.78 : x
  2. Step 2: Convert to fraction form
    10,899.59/15,039.74 = 6,119.78/x
  3. Step 3: Cross multiply
    10,899.59x = 15,039.74 × 6,119.78
  4. Step 4: Simplify right side
    10,899.59x = 92,039,794.26
  5. Step 5: Solve for x
    x = 92,039,794.26/10,899.59
  6. Step 6: Final answer
    x = 8,444.34

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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.