Home / 19,476.80-29,218.08-7,789.76

Finding the Fourth Proportional to 19,476.80, 29,218.08 and 7,789.76

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Solution

The fourth proportional to 19,476.80, 29,218.08 and 7,789.76 is: 11,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,476.80 : 29,218.08 = 7,789.76 : x
  2. Step 2: Convert to fraction form
    19,476.80/29,218.08 = 7,789.76/x
  3. Step 3: Cross multiply
    19,476.80x = 29,218.08 × 7,789.76
  4. Step 4: Simplify right side
    19,476.80x = 227,601,830.86
  5. Step 5: Solve for x
    x = 227,601,830.86/19,476.80
  6. Step 6: Final answer
    x = 11,685.79

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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.