Home / 10,955.70-15,118.83-6,240.78

Finding the Fourth Proportional to 10,955.70, 15,118.83 and 6,240.78

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Solution

The fourth proportional to 10,955.70, 15,118.83 and 6,240.78 is: 8,612.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.70 : 15,118.83 = 6,240.78 : x
  2. Step 2: Convert to fraction form
    10,955.70/15,118.83 = 6,240.78/x
  3. Step 3: Cross multiply
    10,955.70x = 15,118.83 × 6,240.78
  4. Step 4: Simplify right side
    10,955.70x = 94,353,291.89
  5. Step 5: Solve for x
    x = 94,353,291.89/10,955.70
  6. Step 6: Final answer
    x = 8,612.26

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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.