Home / 19,381.19-29,120.45-12,364.43

Finding the Fourth Proportional to 19,381.19, 29,120.45 and 12,364.43

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Solution

The fourth proportional to 19,381.19, 29,120.45 and 12,364.43 is: 18,577.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,381.19 : 29,120.45 = 12,364.43 : x
  2. Step 2: Convert to fraction form
    19,381.19/29,120.45 = 12,364.43/x
  3. Step 3: Cross multiply
    19,381.19x = 29,120.45 × 12,364.43
  4. Step 4: Simplify right side
    19,381.19x = 360,057,558.17
  5. Step 5: Solve for x
    x = 360,057,558.17/19,381.19
  6. Step 6: Final answer
    x = 18,577.69

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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.