Home / 14,152.78-21,231.60-7,577.20

Finding the Fourth Proportional to 14,152.78, 21,231.60 and 7,577.20

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Solution

The fourth proportional to 14,152.78, 21,231.60 and 7,577.20 is: 11,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,152.78 : 21,231.60 = 7,577.20 : x
  2. Step 2: Convert to fraction form
    14,152.78/21,231.60 = 7,577.20/x
  3. Step 3: Cross multiply
    14,152.78x = 21,231.60 × 7,577.20
  4. Step 4: Simplify right side
    14,152.78x = 160,876,079.52
  5. Step 5: Solve for x
    x = 160,876,079.52/14,152.78
  6. Step 6: Final answer
    x = 11,367.10

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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.