Home / 14,150.78-21,228.60-7,575.20

Finding the Fourth Proportional to 14,150.78, 21,228.60 and 7,575.20

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Solution

The fourth proportional to 14,150.78, 21,228.60 and 7,575.20 is: 11,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,150.78 : 21,228.60 = 7,575.20 : x
  2. Step 2: Convert to fraction form
    14,150.78/21,228.60 = 7,575.20/x
  3. Step 3: Cross multiply
    14,150.78x = 21,228.60 × 7,575.20
  4. Step 4: Simplify right side
    14,150.78x = 160,810,890.72
  5. Step 5: Solve for x
    x = 160,810,890.72/14,150.78
  6. Step 6: Final answer
    x = 11,364.10

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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.