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Finding the Fourth Proportional to 14,317.31, 21,475.96 and 7,756.31

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Solution

The fourth proportional to 14,317.31, 21,475.96 and 7,756.31 is: 11,634.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,317.31 : 21,475.96 = 7,756.31 : x
  2. Step 2: Convert to fraction form
    14,317.31/21,475.96 = 7,756.31/x
  3. Step 3: Cross multiply
    14,317.31x = 21,475.96 × 7,756.31
  4. Step 4: Simplify right side
    14,317.31x = 166,574,203.31
  5. Step 5: Solve for x
    x = 166,574,203.31/14,317.31
  6. Step 6: Final answer
    x = 11,634.46

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1.5x scale

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.