Home / 21,307.48-29,405.64-11,747.32

Finding the Fourth Proportional to 21,307.48, 29,405.64 and 11,747.32

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Solution

The fourth proportional to 21,307.48, 29,405.64 and 11,747.32 is: 16,212.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.48 : 29,405.64 = 11,747.32 : x
  2. Step 2: Convert to fraction form
    21,307.48/29,405.64 = 11,747.32/x
  3. Step 3: Cross multiply
    21,307.48x = 29,405.64 × 11,747.32
  4. Step 4: Simplify right side
    21,307.48x = 345,437,462.88
  5. Step 5: Solve for x
    x = 345,437,462.88/21,307.48
  6. Step 6: Final answer
    x = 16,212.03

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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.