Home / 15,487.82-21,334.11-12,495.28

Finding the Fourth Proportional to 15,487.82, 21,334.11 and 12,495.28

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Solution

The fourth proportional to 15,487.82, 21,334.11 and 12,495.28 is: 17,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.82 : 21,334.11 = 12,495.28 : x
  2. Step 2: Convert to fraction form
    15,487.82/21,334.11 = 12,495.28/x
  3. Step 3: Cross multiply
    15,487.82x = 21,334.11 × 12,495.28
  4. Step 4: Simplify right side
    15,487.82x = 266,575,678.00
  5. Step 5: Solve for x
    x = 266,575,678.00/15,487.82
  6. Step 6: Final answer
    x = 17,211.96

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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.