Home / 19,581.13-29,315.80-12,994.21

Finding the Fourth Proportional to 19,581.13, 29,315.80 and 12,994.21

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Solution

The fourth proportional to 19,581.13, 29,315.80 and 12,994.21 is: 19,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,581.13 : 29,315.80 = 12,994.21 : x
  2. Step 2: Convert to fraction form
    19,581.13/29,315.80 = 12,994.21/x
  3. Step 3: Cross multiply
    19,581.13x = 29,315.80 × 12,994.21
  4. Step 4: Simplify right side
    19,581.13x = 380,935,661.52
  5. Step 5: Solve for x
    x = 380,935,661.52/19,581.13
  6. Step 6: Final answer
    x = 19,454.22

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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.