Home / 12,980.22-19,458.66-4,658.28

Finding the Fourth Proportional to 12,980.22, 19,458.66 and 4,658.28

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Solution

The fourth proportional to 12,980.22, 19,458.66 and 4,658.28 is: 6,983.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,980.22 : 19,458.66 = 4,658.28 : x
  2. Step 2: Convert to fraction form
    12,980.22/19,458.66 = 4,658.28/x
  3. Step 3: Cross multiply
    12,980.22x = 19,458.66 × 4,658.28
  4. Step 4: Simplify right side
    12,980.22x = 90,643,886.70
  5. Step 5: Solve for x
    x = 90,643,886.70/12,980.22
  6. Step 6: Final answer
    x = 6,983.23

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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.