Home / 21,839.18-30,135.56-12,277.13

Finding the Fourth Proportional to 21,839.18, 30,135.56 and 12,277.13

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Solution

The fourth proportional to 21,839.18, 30,135.56 and 12,277.13 is: 16,941.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.18 : 30,135.56 = 12,277.13 : x
  2. Step 2: Convert to fraction form
    21,839.18/30,135.56 = 12,277.13/x
  3. Step 3: Cross multiply
    21,839.18x = 30,135.56 × 12,277.13
  4. Step 4: Simplify right side
    21,839.18x = 369,977,975.68
  5. Step 5: Solve for x
    x = 369,977,975.68/21,839.18
  6. Step 6: Final answer
    x = 16,941.02

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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.