Home / 27,986.34-38,620.98-15,411

Finding the Fourth Proportional to 27,986.34, 38,620.98 and 15,411

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Solution

The fourth proportional to 27,986.34, 38,620.98 and 15,411 is: 21,267.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.34 : 38,620.98 = 15,411 : x
  2. Step 2: Convert to fraction form
    27,986.34/38,620.98 = 15,411/x
  3. Step 3: Cross multiply
    27,986.34x = 38,620.98 × 15,411
  4. Step 4: Simplify right side
    27,986.34x = 595,187,922.78
  5. Step 5: Solve for x
    x = 595,187,922.78/27,986.34
  6. Step 6: Final answer
    x = 21,267.09

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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.