Home / 21,317.18-29,418.01-11,757.47

Finding the Fourth Proportional to 21,317.18, 29,418.01 and 11,757.47

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Solution

The fourth proportional to 21,317.18, 29,418.01 and 11,757.47 is: 16,225.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.18 : 29,418.01 = 11,757.47 : x
  2. Step 2: Convert to fraction form
    21,317.18/29,418.01 = 11,757.47/x
  3. Step 3: Cross multiply
    21,317.18x = 29,418.01 × 11,757.47
  4. Step 4: Simplify right side
    21,317.18x = 345,881,193.55
  5. Step 5: Solve for x
    x = 345,881,193.55/21,317.18
  6. Step 6: Final answer
    x = 16,225.46

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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.