Home / 15,412.74-21,274.83-11,871.42

Finding the Fourth Proportional to 15,412.74, 21,274.83 and 11,871.42

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Solution

The fourth proportional to 15,412.74, 21,274.83 and 11,871.42 is: 16,386.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.74 : 21,274.83 = 11,871.42 : x
  2. Step 2: Convert to fraction form
    15,412.74/21,274.83 = 11,871.42/x
  3. Step 3: Cross multiply
    15,412.74x = 21,274.83 × 11,871.42
  4. Step 4: Simplify right side
    15,412.74x = 252,562,442.36
  5. Step 5: Solve for x
    x = 252,562,442.36/15,412.74
  6. Step 6: Final answer
    x = 16,386.60

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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.