Home / 21,349.77-29,461.48-11,918.94

Finding the Fourth Proportional to 21,349.77, 29,461.48 and 11,918.94

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Solution

The fourth proportional to 21,349.77, 29,461.48 and 11,918.94 is: 16,447.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.77 : 29,461.48 = 11,918.94 : x
  2. Step 2: Convert to fraction form
    21,349.77/29,461.48 = 11,918.94/x
  3. Step 3: Cross multiply
    21,349.77x = 29,461.48 × 11,918.94
  4. Step 4: Simplify right side
    21,349.77x = 351,149,612.43
  5. Step 5: Solve for x
    x = 351,149,612.43/21,349.77
  6. Step 6: Final answer
    x = 16,447.47

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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.