Home / 19,367.39-29,031.51-13,128.05

Finding the Fourth Proportional to 19,367.39, 29,031.51 and 13,128.05

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Solution

The fourth proportional to 19,367.39, 29,031.51 and 13,128.05 is: 19,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,367.39 : 29,031.51 = 13,128.05 : x
  2. Step 2: Convert to fraction form
    19,367.39/29,031.51 = 13,128.05/x
  3. Step 3: Cross multiply
    19,367.39x = 29,031.51 × 13,128.05
  4. Step 4: Simplify right side
    19,367.39x = 381,127,114.86
  5. Step 5: Solve for x
    x = 381,127,114.86/19,367.39
  6. Step 6: Final answer
    x = 19,678.81

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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.