Home / 19,782.13-29,673.20-4,992.21

Finding the Fourth Proportional to 19,782.13, 29,673.20 and 4,992.21

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Solution

The fourth proportional to 19,782.13, 29,673.20 and 4,992.21 is: 7,488.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782.13 : 29,673.20 = 4,992.21 : x
  2. Step 2: Convert to fraction form
    19,782.13/29,673.20 = 4,992.21/x
  3. Step 3: Cross multiply
    19,782.13x = 29,673.20 × 4,992.21
  4. Step 4: Simplify right side
    19,782.13x = 148,134,845.77
  5. Step 5: Solve for x
    x = 148,134,845.77/19,782.13
  6. Step 6: Final answer
    x = 7,488.32

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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.