Home / 21,114.58-29,133.49-12,615.42

Finding the Fourth Proportional to 21,114.58, 29,133.49 and 12,615.42

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Solution

The fourth proportional to 21,114.58, 29,133.49 and 12,615.42 is: 17,406.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.58 : 29,133.49 = 12,615.42 : x
  2. Step 2: Convert to fraction form
    21,114.58/29,133.49 = 12,615.42/x
  3. Step 3: Cross multiply
    21,114.58x = 29,133.49 × 12,615.42
  4. Step 4: Simplify right side
    21,114.58x = 367,531,285.25
  5. Step 5: Solve for x
    x = 367,531,285.25/21,114.58
  6. Step 6: Final answer
    x = 17,406.52

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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.