Home / 15,827.21-21,845.87-9,855.35

Finding the Fourth Proportional to 15,827.21, 21,845.87 and 9,855.35

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Solution

The fourth proportional to 15,827.21, 21,845.87 and 9,855.35 is: 13,603.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,827.21 : 21,845.87 = 9,855.35 : x
  2. Step 2: Convert to fraction form
    15,827.21/21,845.87 = 9,855.35/x
  3. Step 3: Cross multiply
    15,827.21x = 21,845.87 × 9,855.35
  4. Step 4: Simplify right side
    15,827.21x = 215,298,694.90
  5. Step 5: Solve for x
    x = 215,298,694.90/15,827.21
  6. Step 6: Final answer
    x = 13,603.07

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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.