Home / 15,459.72-21,334.41-8,745.21

Finding the Fourth Proportional to 15,459.72, 21,334.41 and 8,745.21

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Solution

The fourth proportional to 15,459.72, 21,334.41 and 8,745.21 is: 12,068.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.72 : 21,334.41 = 8,745.21 : x
  2. Step 2: Convert to fraction form
    15,459.72/21,334.41 = 8,745.21/x
  3. Step 3: Cross multiply
    15,459.72x = 21,334.41 × 8,745.21
  4. Step 4: Simplify right side
    15,459.72x = 186,573,789.00
  5. Step 5: Solve for x
    x = 186,573,789.00/15,459.72
  6. Step 6: Final answer
    x = 12,068.38

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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.