Home / 15,054.66-20,778.03-8,680.10

Finding the Fourth Proportional to 15,054.66, 20,778.03 and 8,680.10

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Solution

The fourth proportional to 15,054.66, 20,778.03 and 8,680.10 is: 11,980.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.66 : 20,778.03 = 8,680.10 : x
  2. Step 2: Convert to fraction form
    15,054.66/20,778.03 = 8,680.10/x
  3. Step 3: Cross multiply
    15,054.66x = 20,778.03 × 8,680.10
  4. Step 4: Simplify right side
    15,054.66x = 180,355,274.31
  5. Step 5: Solve for x
    x = 180,355,274.31/15,054.66
  6. Step 6: Final answer
    x = 11,980.03

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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.