Home / 15,487.85-21,373.62-8,773.37

Finding the Fourth Proportional to 15,487.85, 21,373.62 and 8,773.37

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Solution

The fourth proportional to 15,487.85, 21,373.62 and 8,773.37 is: 12,107.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.85 : 21,373.62 = 8,773.37 : x
  2. Step 2: Convert to fraction form
    15,487.85/21,373.62 = 8,773.37/x
  3. Step 3: Cross multiply
    15,487.85x = 21,373.62 × 8,773.37
  4. Step 4: Simplify right side
    15,487.85x = 187,518,569.63
  5. Step 5: Solve for x
    x = 187,518,569.63/15,487.85
  6. Step 6: Final answer
    x = 12,107.47

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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.