Home / 19,830.55-27,374.96-12,669.88

Finding the Fourth Proportional to 19,830.55, 27,374.96 and 12,669.88

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Solution

The fourth proportional to 19,830.55, 27,374.96 and 12,669.88 is: 17,490.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830.55 : 27,374.96 = 12,669.88 : x
  2. Step 2: Convert to fraction form
    19,830.55/27,374.96 = 12,669.88/x
  3. Step 3: Cross multiply
    19,830.55x = 27,374.96 × 12,669.88
  4. Step 4: Simplify right side
    19,830.55x = 346,837,458.20
  5. Step 5: Solve for x
    x = 346,837,458.20/19,830.55
  6. Step 6: Final answer
    x = 17,490.06

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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.