Home / 15,849.21-21,871.88-9,134.80

Finding the Fourth Proportional to 15,849.21, 21,871.88 and 9,134.80

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Solution

The fourth proportional to 15,849.21, 21,871.88 and 9,134.80 is: 12,606.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.21 : 21,871.88 = 9,134.80 : x
  2. Step 2: Convert to fraction form
    15,849.21/21,871.88 = 9,134.80/x
  3. Step 3: Cross multiply
    15,849.21x = 21,871.88 × 9,134.80
  4. Step 4: Simplify right side
    15,849.21x = 199,795,140.06
  5. Step 5: Solve for x
    x = 199,795,140.06/15,849.21
  6. Step 6: Final answer
    x = 12,606.00

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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.