Home / 21,245.49-31,887.72-21,166.11

Finding the Fourth Proportional to 21,245.49, 31,887.72 and 21,166.11

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Solution

The fourth proportional to 21,245.49, 31,887.72 and 21,166.11 is: 31,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.49 : 31,887.72 = 21,166.11 : x
  2. Step 2: Convert to fraction form
    21,245.49/31,887.72 = 21,166.11/x
  3. Step 3: Cross multiply
    21,245.49x = 31,887.72 × 21,166.11
  4. Step 4: Simplify right side
    21,245.49x = 674,938,989.17
  5. Step 5: Solve for x
    x = 674,938,989.17/21,245.49
  6. Step 6: Final answer
    x = 31,768.58

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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.