Home / 21,919.44-30,248.73-12,488.07

Finding the Fourth Proportional to 21,919.44, 30,248.73 and 12,488.07

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Solution

The fourth proportional to 21,919.44, 30,248.73 and 12,488.07 is: 17,233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.44 : 30,248.73 = 12,488.07 : x
  2. Step 2: Convert to fraction form
    21,919.44/30,248.73 = 12,488.07/x
  3. Step 3: Cross multiply
    21,919.44x = 30,248.73 × 12,488.07
  4. Step 4: Simplify right side
    21,919.44x = 377,748,257.65
  5. Step 5: Solve for x
    x = 377,748,257.65/21,919.44
  6. Step 6: Final answer
    x = 17,233.48

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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.