Home / 18,778.37-28,172.86-9,407.08

Finding the Fourth Proportional to 18,778.37, 28,172.86 and 9,407.08

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Solution

The fourth proportional to 18,778.37, 28,172.86 and 9,407.08 is: 14,113.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.37 : 28,172.86 = 9,407.08 : x
  2. Step 2: Convert to fraction form
    18,778.37/28,172.86 = 9,407.08/x
  3. Step 3: Cross multiply
    18,778.37x = 28,172.86 × 9,407.08
  4. Step 4: Simplify right side
    18,778.37x = 265,024,253.90
  5. Step 5: Solve for x
    x = 265,024,253.90/18,778.37
  6. Step 6: Final answer
    x = 14,113.27

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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.