Home / 15,590.12-21,513.33-8,876.43

Finding the Fourth Proportional to 15,590.12, 21,513.33 and 8,876.43

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Solution

The fourth proportional to 15,590.12, 21,513.33 and 8,876.43 is: 12,248.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,590.12 : 21,513.33 = 8,876.43 : x
  2. Step 2: Convert to fraction form
    15,590.12/21,513.33 = 8,876.43/x
  3. Step 3: Cross multiply
    15,590.12x = 21,513.33 × 8,876.43
  4. Step 4: Simplify right side
    15,590.12x = 190,961,567.81
  5. Step 5: Solve for x
    x = 190,961,567.81/15,590.12
  6. Step 6: Final answer
    x = 12,248.89

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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.