Home / 15,327.45-21,165.30-9,672.30

Finding the Fourth Proportional to 15,327.45, 21,165.30 and 9,672.30

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Solution

The fourth proportional to 15,327.45, 21,165.30 and 9,672.30 is: 13,356.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.45 : 21,165.30 = 9,672.30 : x
  2. Step 2: Convert to fraction form
    15,327.45/21,165.30 = 9,672.30/x
  3. Step 3: Cross multiply
    15,327.45x = 21,165.30 × 9,672.30
  4. Step 4: Simplify right side
    15,327.45x = 204,717,131.19
  5. Step 5: Solve for x
    x = 204,717,131.19/15,327.45
  6. Step 6: Final answer
    x = 13,356.24

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1.5x scale

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.