Home / 12,930.88-19,390.80-4,924.28

Finding the Fourth Proportional to 12,930.88, 19,390.80 and 4,924.28

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Solution

The fourth proportional to 12,930.88, 19,390.80 and 4,924.28 is: 7,384.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.88 : 19,390.80 = 4,924.28 : x
  2. Step 2: Convert to fraction form
    12,930.88/19,390.80 = 4,924.28/x
  3. Step 3: Cross multiply
    12,930.88x = 19,390.80 × 4,924.28
  4. Step 4: Simplify right side
    12,930.88x = 95,485,728.62
  5. Step 5: Solve for x
    x = 95,485,728.62/12,930.88
  6. Step 6: Final answer
    x = 7,384.32

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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.