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Finding the Fourth Proportional to 14,159.67, 21,242 and 4,672.45

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Solution

The fourth proportional to 14,159.67, 21,242 and 4,672.45 is: 7,009.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,159.67 : 21,242 = 4,672.45 : x
  2. Step 2: Convert to fraction form
    14,159.67/21,242 = 4,672.45/x
  3. Step 3: Cross multiply
    14,159.67x = 21,242 × 4,672.45
  4. Step 4: Simplify right side
    14,159.67x = 99,252,182.90
  5. Step 5: Solve for x
    x = 99,252,182.90/14,159.67
  6. Step 6: Final answer
    x = 7,009.50

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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.