Home / 14,830.88-20,465.80-8,115.20

Finding the Fourth Proportional to 14,830.88, 20,465.80 and 8,115.20

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Solution

The fourth proportional to 14,830.88, 20,465.80 and 8,115.20 is: 11,198.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,830.88 : 20,465.80 = 8,115.20 : x
  2. Step 2: Convert to fraction form
    14,830.88/20,465.80 = 8,115.20/x
  3. Step 3: Cross multiply
    14,830.88x = 20,465.80 × 8,115.20
  4. Step 4: Simplify right side
    14,830.88x = 166,084,060.16
  5. Step 5: Solve for x
    x = 166,084,060.16/14,830.88
  6. Step 6: Final answer
    x = 11,198.53

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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.