Home / 19,778.13-29,467.47-18,837.72

Finding the Fourth Proportional to 19,778.13, 29,467.47 and 18,837.72

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Solution

The fourth proportional to 19,778.13, 29,467.47 and 18,837.72 is: 28,066.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.13 : 29,467.47 = 18,837.72 : x
  2. Step 2: Convert to fraction form
    19,778.13/29,467.47 = 18,837.72/x
  3. Step 3: Cross multiply
    19,778.13x = 29,467.47 × 18,837.72
  4. Step 4: Simplify right side
    19,778.13x = 555,099,948.97
  5. Step 5: Solve for x
    x = 555,099,948.97/19,778.13
  6. Step 6: Final answer
    x = 28,066.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.